Secret identities

As a part of having an alter ego, individuals try to keep secret identities, often telling as few people as possible about their alternate identity. Below are lists of characters' secret identities, and who is aware of them.

Barry Allen/The Flash
After waking up from a coma, Barry discovered he has gained the power of super speed. Using this to his advantage, he eventually decided to become a guardian angel of Central City. The three S.T.A.R. Labs members that took care of him when he was unconscious decided to work with him.
 * 1) Eobard Thawne: One of the three S.T.A.R. Labs members that looked after Barry during his nine-month comatose state, however, Eobard already knew Barry would eventually become the Flash, as he is from the future and is the Reverse-Flash, the man who murdered Barry's mother.
 * 2) Caitlin Snow: Caitlin was responsible for looking after Barry during his nine-month comatose state, eventually joining him on his heroic escapades.
 * 3) Cisco Ramon: Cisco helped look after Barry during his nine-month comatose, eventually joining him for his heroic escapades
 * 4) Oliver Queen: Before actually becoming the Flash, Barry consulted Oliver on what to do. Oliver motivated him to become the Flash, observing his super speed as he ran away.
 * 5) Joe West: Before Barry was shot by Clyde, Joe shot Clyde himself numerous times. He shortly discovered that Barry had been given his powers from the bolt of lightning that had struck him.
 * 6) Felicity Smoak: When Felicity visited Barry in Central City, he showed her his newfound abilities.
 * 7) Bette Sans Souci: After saving her from General Eiling, Barry revealed his identity to Bette and the fact that they are both meta-humans.
 * 8) Wade Eiling: Eiling witnessed Barry without his mask on after shooting Bette Sans Souci.
 * 9) Tony Woodward: After defeating his childhood bully, Barry put Tony in the Pipeline and revealed himself.
 * 10) John Diggle: A few members of Team Arrow were in Central City on a mission; while waiting for Oliver to return, John and Felicity were talking and the Flash sped up towards them, shocking John (as he previously felt that the speed might have been exaggeration, until he finally saw it with his own eyes).
 * 11) Lyla Michaels: After coming to Star City to help out Oliver, Barry accidentally let Lyla know that he was the Flash, assuming John had told her.
 * 12) Roy Harper: Arriving back from getting sushi, Barry kept his mask off but the rest of his outfit on, allowing Roy to deduce his identity.
 * 13) Henry Allen: After piecing together a number of interactions with the Flash, Henry concluded that the Flash is Barry. Despite Barry shrugging the accusation off, Henry proceeded to admit how proud he was and assure that, if his son was actually the Flash, that he was doing real good. Only later did Barry confirm his identity after saving his father's life, to no surprise from either.
 * 14) Ronnie Raymond: Ronnie became aware of Barry's secret identity as the Flash; when he met him in S.T.A.R. Labs after the separation of Firestorm.
 * 15) Martin Stein: Martin also became aware of Barry's secret identity as the Flash; when he met him in S.T.A.R. Labs after the separation of Firestorm.
 * 16) Clarissa Stein: Upon seeing Barry using his speed to quickly get her husband a pizza, it is presumed that Clarissa was intelligent enough to link him and the Flash (who was on the news) as the same person.
 * 17) Leonard Snart: Leonard tortured Dante Ramon, forcing Cisco to reveal the Flash's identity in return for his brother's life.
 * 18) Eddie Thawne: Barry revealed his identity as the Flash to Eddie in order to have him help them get to the bottom of the mystery that was Dr. Wells.
 * 19) Ray Palmer: Needing help on his A.T.O.M. Exosuit, Ray and Felicity headed to S.T.A.R. Labs in Central City and Felicity had to reveal Barry's secret identity as the Flash.
 * 20) Brie Larvan: It is assumed that Brie found out that Barry is the Flash, when he was unmasked, used his speed to capture the bee at S.T.A.R. Labs, with Brie seeing it through the camera on the bee.
 * 21) Laurel Lance: As Laurel and Cisco decide to talk privately, she told him that she was aware of Barry's identity as the Flash.
 * 22) Hannibal Bates: Bates transformed into Barry and the Flash, explored S.T.A.R Labs, was considered part of the team, and put in the pipeline prison. It is implied that Bates pieced together Barry as the Flash.
 * 23) Gideon: Gideon is a sentient computer and knows Barry is the Flash, as he is her creator.
 * 24) Iris West: Iris concluded that the Flash is in fact Barry after feeling static electricity when trying to grab his hand, as she'd done previously with Barry, when the latter was in a coma for 9 months.
 * 25) Malcolm Merlyn: When Barry went to Nanda Parbat to rescue Team Arrow, Felicity called him by name, revealing his identity to Malcolm.
 * 26) Nora Allen: When Barry traveled back in time to when his mother died, he reveals to her that he is Barry and the Flash.
 * 27) Hunter Zolomon: Hunter appeared in S.T.A.R. Labs out of nowhere, revealing that he knew of Barry's identity, thus further implying his connection to the Flash also.
 * 28) Henry Hewitt: When Martin Stein needed a new firestorm the team asked Hewitt. When he arrived at star labs he saw the Flash unmasked.
 * 29) Jefferson Jackson: After becoming Firestorm, it is clear that he knew Barry's identity as the Flash.
 * 30) Harry Wells: After saving the Flash from King Shark, Barry revealed his identity to him. However, it is implied that he already knew of his existence.
 * 31) Linda Park: After asking Linda to go up against Zoom, Barry decided that he needed to trust her completely in order for her to trust him likewise, thus revealing his secret identity as the Flash.
 * 32) Kendra Saunders: Cisco accidentally revealed Barry's identity as the Flash to Kendra after Barry saved him from being impaled in the chest when Vandal Savage threw a knife at him.
 * 33) Carter Hall: Carter saw Barry unmasked while being chained in the Arrowcave.
 * 34) Thea Queen: When Barry arrived in the Arrowcave with Team Arrow, he had his mask off.
 * 35) Vandal Savage: Vandal came in to Oliver Queen's apartment and attacked Teams Arrow and the Flash for Kendra Saunders, causing Barry to run super fast to protect his friends from Vandal's daggers.
 * 36) Patty Spivot: Patty found files on the Flash in Barry's desk that were inaccessible to the CCPD, raising her suspicions of Barry and the Flash being the same person along with knowledge that Joe West and Barry secretly help S.T.A.R. Labs occasionally. Patty later confirmed Barry's identity as the Flash after she tricked him by claiming an armed man was on her train.
 * 37) Jesse Quick: Jesse saw Barry unmasked when they were captured by Zoom.
 * 38) Jay Garrick: After Barry was kidnapped by Zoom, Jay saw Barry unmasked.
 * 39) Barry Allen (Earth Two): After being kidnapped by Earth One Barry, Earth One Cisco and Harry, Barry was informed of everything that was going on, including his doppelgänger's identity as the Flash.
 * 40) Iris West (Earth Two): Iris was filled in on everything that was going on, including Earth One Barry being the Flash, by Earth Two Barry, Earth One Cisco and Harry.
 * 41) Caitlin Snow (Earth Two): Caitlin saw Earth One Barry unmasked after helping Cisco, Harry, Earth Two Barry and Earth Two Iris save him.
 * 42) Mari McCabe: After meeting Vixen, Green Arrow and the Flash maintained a friendship with her and revealed their identities. While visiting Star City she confirmed that she knew Barry's identity as the Flash.
 * 43) Hartley Rathaway: In a recently-altered timeline, Hartley save Barry from being killed by a Time Wraith inside S.T.A.R. Labs.
 * 44) Kara Danvers: Barry revealed his identity as the Flash to Kara after reaching her Earth and realizing that he wasn't on his own.
 * 45) James Olsen: After returning to Supergirl's base of operations, Barry revealed his identity as the Flash to James.
 * 46) Winn Schott: After returning to Supergirl's base of operations, Barry revealed his identity as the Flash to Winn.
 * 47) Lucy Lane
 * 48) D.E.O.: After teaming up with Supergirl, she took him to the D.E.O. where Barry revealed his identity as the Flash.
 * 49) Cat Grant: Cat was able to figure out the connection between Barry, the red suit and his longing for the hero to be named the Flash.
 * 50) Tina McGee: After saving Dr. McGee from a collapsing building, she acknowledged that she knew Barry's identity as the Flash, reasoning that she wasn't an idiot and her occupation allowed her to make such observations.
 * 51) Wally West: After Zoom openly took Henry Allen in front of his family and friends, Barry raced after him, with Wally being shocked at the sudden revelation.
 * 52) Curtis Holt: When discussing Wild Dog with Oliver and Felicity, Felicity mentioned Oliver shooting Barry in the back while training him implying that Curtis knows about Barry being the Flash.
 * 53) H.R. Wells: When Earth Nineteen Wells came to Earth One to replace Earth Two Wells on Team Flash, he was informed on Barry's secret identity as the Flash.
 * 54) Mick Rory: Mick was present when Barry unmasked at the S.T.A.R. Labs hall.
 * 55) Sara Lance: Sara was present when Barry was unmasked at the S.T.A.R Labs hall.
 * 56) Nate Heywood: Nate was present when Barry was unmasked at the S.T.A.R Labs hall.
 * 57) Amaya Jiwe: Amaya was present when Barry was unmasked at the S.T.A.R Labs hall.
 * 58) Rip Hunter: Rip was sent a message from Barry in the year 2056, acknowledging that he created an alternate timeline known as "Flashpoint", altering the pasts and futures of everyone he knew.
 * 59) Smith: Smith never stated how he knew who Barry was, but he already knew he was the Flash.
 * 60) Dominators: The Dominators were aware of Barry's existence as the Flash and his part in creating the alternate timeline Flashpoint.
 * 61) Julian Albert: Barry was forced to reveal his identity as the Flash after S.T.A.R. Labs took Julian into custody, and Julian initially did not trust anyone wearing a mask.
 * 62) Barry Allen (Savitar): Savitar knows that Barry is the Flash; due to the fact that he is the latter's future time remnant.
 * 63) Rene Ramirez: Barry must have told Rene his identity as the Flash, when he was working with him.
 * 64) Rory Regan: Barry must have told Rory his identity the Flash, when he was working with him.
 * 65) Music Meister: Music Meister is already aware of Barry's identity as the Flash.
 * 66) Mon-El: Kara must have told Mon-El Barry's identity as the Flash.
 * 67) J'onn J'onzz: Kara must have told J'onn his identity as the Flash.
 * 68) Abra Kadabra: Abra Kadabra is aware of Barry's identity as the Flash; due to from the future, the 64th century.
 * 69) Gypsy: Gypsy became aware of Barry's identity as the Flash; when she was temporarily under the control of Grodd.
 * 70) Cecile Horton: Joe informed Cecile of Barry's identity as the Flash.
 * 71) Tracy Brand: Barry allowed H.R. to reveal his identity as the Flash to Tracy.

Floyd Lawton/Deadshot
Throughout his career as the world's deadliest marksman, Floyd became an assassin known under the codename Deadshot; as only a few known individuals are aware of his civilian identity.
 * 1) Alexi Leonov: Oliver ask Alexi to able to find out Deadshot's identity.
 * 2) Oliver Queen: Alexi informed Oliver of Floyd's identity as Deadshot.
 * 3) John Diggle: Oliver informed John of Floyd's identity as Deadshot.
 * 4) Chien Na Wei: Chien knows that Floyd is Deadshot.
 * 5) Felicity Smoak: Oliver informed Felicity of Floyd's identity as Deadshot (off-screen).
 * 6) Lyla Michaels: John informed Lyla of Floyd's identity as Deadshot.
 * 7) Amanda Waller: After Floyd unwillingly became a member Task Force X, Amanda became aware of his identity as Deadshot.
 * 8) A.R.G.U.S.: While unconfirmed it's possible that most members of A.R.G.U.S. are aware of Floyd's identity as Deadshot; since he unwillingly became a member Task Force X.
 * 9) Mark Scheffer: Mark became aware of Floyd's identity as Deadshot; after he unwillingly became a member Task Force X.
 * 10) Ben Turner: Ben became aware of Floyd's identity as Deadshot; after he unwillingly became a member Task Force X.
 * 11) Carrie Cutter: Carrie became aware of Floyd's identity as Deadshot; after she unwillingly became a member Task Force X.
 * 12) Joseph Cray: Joseph saw Floyd in his Deadshot suit.

Slade Wilson/Deathstroke
After the events of Lian Yu, Slade became a mercenary known under the codenamed Deathstroke; as only a few known individuals are aware of his civilian identity.
 * 1) Isabel Rochev: Isabel knows that Slade is Deathstroke.
 * 2) Sebastian Blood: Sebastian saw Slade unmasked in his Deathstroke suit.
 * 3) A.R.G.U.S.: While unconfirmed it's possible that most members of A.R.G.U.S. are aware of Slade's identity as Deathstroke; after Oliver informed Amanda that Slade is still alive.
 * 4) Amanda Waller: After Oliver informed Amanda that Slade is still alive, she quickly figured out that he is the mercenary known as Deathstroke.
 * 5) Lyla Michaels: Lyla was informed of Slade's identity as Deathstroke (off-screen).
 * 6) Oliver Queen: After Amanda Oliver informed of the mercenary known as Deathstroke, he quickly figured out that Slade is Deathstroke.
 * 7) John Diggle: After Oliver found out, he informed John of Slade's identity as Deathstroke (off-screen).
 * 8) Felicity Smoak: After Oliver found out, he informed Felicity of Slade's identity as Deathstroke (off-screen).
 * 9) Sara Lance: After Oliver found out, he informed Sara of Slade's identity as Deathstroke (off-screen).
 * 10) Roy Harper: After Oliver found out, he informed Roy of Slade's identity as Deathstroke (off-screen).
 * 11) Quentin Lance: Quentin was informed of Slade's identity as Deathstroke (off-screen).
 * 12) Ripped: Ripped became aware of Slade's identity as Deathstroke; after he joined his army.
 * 13) Laurel Lance: Laurel saw Slade unmasked in his Deathstroke suit.
 * 14) Malcolm Merlyn: Malcolm knows that Slade is Deathstroke.
 * 15) Thea Queen: Thea was informed of Slade's identity as Deathstroke (off-screen).
 * 16) Nyssa al Ghul: Nyssa saw Slade unmasked in his Deathstroke suit.
 * 17) Laurel Lance (Earth Two): Laurel saw Slade unmasked in his Deathstroke suit.
 * 18) Talia al Ghul's cult: Most members of Talia's cult saw Slade unmasked in his Deathstroke suit.

Sebastian Blood/Brother Blood

 * 1) Roger Trigon: As the leader of the Church of Blood, Roger was the one who gave Sebastian his secret identity.
 * 2) Daily: As he was part of the Church of Blood, Daily was aware of Sebastian being Brother Blood, even posing as him, leading to his ultimate demise.
 * 3) Cyrus Gold: As he was a childhood friend of Sebastian as well as part of the Church of Blood, Cyrus was aware of Sebastian being Brother Blood.
 * 4) Slade Wilson: As the man behind the activities of the Church of Blood, Slade is aware of Sebastian being Brother Blood.
 * 5) Isabel Rochev: As she was part of the Church of Blood, Isabel was aware of Sebastian being Brother Blood.
 * 6) Laurel Lance: Laurel first suspected Sebastian when she was investigating him after the death of Lucas Hilton. Later on, when she found out Sebastian wrote a press statement about Moira Queen's death, she learned that Sebastian was Brother Blood.
 * 7) Oliver Queen: After Laurel discovered that Sebastian was Brother Blood, she went to tell Oliver about this, allowing him to take him down.
 * 8) John Diggle: After Laurel told Oliver of Sebastian's identity, John presumably found out also.
 * 9) Felicity Smoak: After Laurel told Oliver of Sebastian's identity, Felicity presumably found out also.
 * 10) Clinton Hogue: As Sebastian's former bodyguard, Clinton was aware of Sebastian being Brother Blood, even later taking up the title himself.

Isabel Rochev/Ravager
After becoming a member of Slade Wilson's army, Isabel became known as Ravager; as only a few known individuals are aware of his civilian identity.
 * 1) Slade Wilson: Slade saw Isabel unmasked in her Ravager suit; while unconfirmed it's possible that Slade gave Isabel her Ravager suit.
 * 2) John Diggle: John saw Isabel in her Ravager suit.
 * 3) Felicity Smoak: Felicity saw Isabel in her Ravager suit.
 * 4) Sebastian Blood: Sebastian saw Isabel in her Ravager suit.
 * 5) League of Assassins: Most members of the League of Assassins that were present at Queen Consolidated, saw Isabel unmasked in her Ravager suit.
 * 6) Nyssa al Ghul: Nyssa saw Isabel unmasked in her Ravager suit.
 * 7) Sara Lance: Sara saw Isabel unmasked in her Ravager suit.

Simon Morrison/Adrian Chase/Prometheus

 * 1) Talia al Ghul: Talia is aware of her student's double life as she is the one who trained him for it.
 * 2) Evelyn Sharp: Adrian revealed his identity to Evelyn at some point after she joined him.
 * 3) Susan Williams: Adrian revealed his identity to Susan after kidnapping her.
 * 4) Oliver Queen: Talia informed Oliver that Prometheus is Adrian Chase in order to cause him pain.
 * 5) Quentin Lance: Upon discovering Prometheus' identity, Oliver went on to inform Quentin.
 * 6) Rene Ramirez: Upon discovering Prometheus' identity, Oliver went on to inform Rene.
 * 7) John Diggle: Upon discovering Prometheus' identity, Oliver went on to inform John.
 * 8) Dinah Drake: Upon discovering Prometheus' identity, Oliver went on to inform Dinah.
 * 9) Curtis Holt: Upon discovering Prometheus' identity, Oliver went on to inform Curtis.
 * 10) Felicity Smoak: Upon discovering Prometheus' identity, Oliver went on to inform Felicity.
 * 11) Laurel Lance (Earth Two): After he freed her from the S.T.A.R. Labs pipeline, Adrian revealed his identity as Prometheus to Laurel.
 * 12) Doris Chase: Oliver (under the guise of Green Arrow) told Doris about her husband's double life in hopes that she could convince him to stop his quest for vengeance; however, she did not believe the latter until she saw Adrian unmasked in his Prometheus suit.

John Diggle/Spartan

 * 1) Laurel Lance: Five months before Oliver became Green Arrow, John became Spartan and showed his alter-ego to his partners.
 * 2) Thea Queen: Five months before Oliver became Green Arrow, John became Spartan and showed his alter-ego to his partners.
 * 3) Felicity Smoak: When Laurel and Thea explained to Felicity and Oliver about the Ghosts, Oliver, Felicity, Laurel and Thea came back to Star City and Felicity saw John with his suit.
 * 4) Oliver Queen: When he and Felicity returned to Star City, he saw John in his suit.
 * 5) Quentin Lance: When Quentin re-joined Team Arrow, he discovered John's identity.
 * 6) Sara Lance: After Sara was resurrected she saw John in full Spartan get-up.
 * 7) Barry Allen: Barry saw John in full Spartan get-up after saving him.
 * 8) Carter Hall: Carter saw John in full Spartan get-up.
 * 9) Kendra Saunders: Kendra saw John in full Spartan get-up.
 * 10) Vandal Savage: Vandal came in Oliver's apartment and attack Team Arrow and Team Flash for Kendra Saunders.
 * 11) Mari McCabe: Mari met John and learned his secret identity when Oliver brought her to the Arrowcave.
 * 12) Samantha Clayton: Much like Mari, Samantha is also aware of John's alter-ego after Oliver took her down to the bunker.
 * 13) Andy Diggle: After John pulled off the mask of a ghost which happened to be Andy, he was brought back to the Arrowcave to be interugated by his brother and later on found out about John's identity.
 * 14) Roy Harper: Roy returned to Star City in 2016 and helped Team Arrow in the fight against the Calculator, fighting aside Spartan, though he already knew John's membership.
 * 15) Damien Darhk: Due to John's brother being a ghost, Andy told Damien about Oliver and his team.
 * 16) Curtis Holt: When Curtis stumbled upon the Arrowcave, he discovered many secret identities, along with John's.
 * 17) Evelyn Sharp: After John escaped from prison with the help of Oliver, Evelyn became aware of John's identity.
 * 18) Rory Regan: After John escaped from prison with the help of Oliver, Rory became aware of John's identity.
 * 19) Rene Ramirez: After John escaped from prison with the help of Oliver, Rene became aware of John's identity.
 * 20) Christopher Chance: Being a friend of Oliver's back in Russia, when Christopher arrived in Star City he became aware of John's identity as Spartan.
 * 21) Kara Danvers: After traveling to Earth One to help with the Dominators, John confirmed his identity as Spartan to Kara.
 * 22) H.R. Wells: After everyone gathered to help with the Dominators, H.R. overheard John confirming his identity as Spartan.
 * 23) Ray Palmer: Ray saw John's unmasked as Spartan at the S.T.A.R. Labs hall when gathering a team to fight the Dominators.
 * 24) Jefferson Jackson: Jax saw John's unmasked as Spartan at the S.T.A.R. Labs hall when gathering a team to fight the Dominators.
 * 25) Martin Stein: Martin saw John's unmasked as Spartan at the S.T.A.R. Labs hall when gathering a team to fight the Dominators.
 * 26) Nate Heywood: Nate saw John's unmasked as Spartan at the S.T.A.R. Labs hall when gathering a team to fight the Dominators.
 * 27) Mick Rory: Mick saw John's unmasked as Spartan at the S.T.A.R. Labs hall when gathering a team to fight the Dominators.
 * 28) Amaya Jiwe: Amaya saw John's unmasked as Spartan at the S.T.A.R. Labs hall when gathering a team to fight the Dominators.
 * 29) Iris West: Iris was present when John was unmasked in the S.T.A.R Labs Hanger.
 * 30) Adrian Chase: Evelyn told Adrian Chase the identities of all the members of Team Arrow.
 * 31) Cisco Ramon: Cisco was present when John was unmasked in the S.T.A.R. Labs hall.
 * 32) Caitlin Snow: Caitlin was present when John was unmasked in the S.T.A.R. Labs hall.
 * 33) Dinah Drake: Dinah learned of John's identity as Spartan; after she joined Team Arrow.
 * 34) Lyla Michaels: Lyla knows about John being Spartan.

Roy Harper/Arsenal

 * 1) Team Arrow: After Roy joined the team (during that time the members were; Oliver Queen, John Diggle, Felicity Smoak, and Sara Lance), they all became aware of his secret identity as he helped fight crime with them.
 * 2) Laurel Lance: When Laurel joined Team Arrow, she discovered Roy's identity as Arsenal.
 * 3) Nyssa al Ghul: When Nyssa temporarily joined Team Arrow, she became aware of Roy's identity as Arsenal.
 * 4) Barry Allen: When Barry was visiting Starling City to help the Arrow, members of Team Flash were allowed into the Arrowcave, thus becoming aware of Roy's identity as Arsenal.
 * 5) Caitlin Snow: When Caitlin was visiting Starling City to help the Arrow, members of Team Flash were allowed into the Arrowcave, thus becoming aware of Roy's identity as Arsenal.
 * 6) Cisco Ramon: When Cisco was visiting Starling City to help the Arrow, members of Team Flash were allowed into the Arrowcave, thus becoming aware of Roy's identity as Arsenal.
 * 7) Thea Queen: Thea was able to deduce that Roy was the red-hooded counterpart to the Arrow.
 * 8) Quentin Lance: Quentin was able to make the connection between Roy's red hoodie and working with the Arrow, therefore concluding him as Arsenal.
 * 9) Curtis Holt: When discussing Wild Dog with Oliver and Felicity Curtis mention Oliver shooting Roy in the leg before recruiting Roy into Team Arrow implying Curtis knows about Roy being Arsenal.

Nate Heywood/Steel

 * 1) Ray Palmer: When Ray was seeing what Nate could do, he saw him as Steel.
 * 2) Sara Lance: Sara saw Nate as Steel when Ray was testing Nate's powers.
 * 3) Amaya Jiwe: Amaya saw Nate as Steel when Ray was testing Nate's powers.
 * 4) Mick Rory: When Nate saved Mick from Amaya, he saw him as Steel.
 * 5) Martin Stein: Martin was present when Nate demonstrated his power as Steel.
 * 6) Jefferson Jackson: Jax was present when Nate demonstrated his power as Steel.
 * 7) Jonah Hex: When Nate saves Hex from being hung, he saw him as Steel.
 * 8) Barry Allen: Barry saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 9) Caitlin Snow: Caitlin saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 10) Cisco Ramon: Cisco saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 11) Joe West: Joe saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 12) Iris West: Iris saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 13) H.R. Wells: H.R. saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 14) Oliver Queen: Oliver saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 15) John Diggle: John saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 16) Felicity Smoak: Felicity saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 17) Curtis Holt: Curtis saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 18) Rene Ramirez: Rene saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 19) Rory Regan: Rory saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 20) Thea Queen Thea saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 21) Kara Danvers: Kara saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 22) Eobard Thawne: Eobard knows that Nate is Steel.
 * 23) Damien Darhk: Damien saw Nate in his Steel suit.
 * 24) Malcolm Merlyn: Malcolm knows that Nate is Steel.
 * 25) Rip Hunter: Rip knows that Nate is Steel.
 * 26) Leonard Snart: After Leonard was recruited into the Legion of Doom; he was informed of Nate's identity as Steel (off-screen).

Curtis Holt/Mr. Terrific

 * 1) Oliver Queen: Curtis told Oliver about him wanting to become a vigilante; shortly before he joined Team Arrow.
 * 2) Felicity Smoak: Felicity became aware of Curtis' identity; after he joined Team Arrow.
 * 3) Rene Ramirez: Rene became aware of Curtis' identity; after he joined Team Arrow.
 * 4) Evelyn Sharp: Evelyn became aware of Curtis' identity; after she joined Team Arrow.
 * 5) Rory Regan: Rory became aware of Curtis' identity; after he joined Team Arrow.
 * 6) John Diggle: John became aware of Curtis' identity; after he returned to Team Arrow.
 * 7) Thea Queen: Thea was present when Curtis was unmasked in the Arrowcave.
 * 8) Quentin Lance: Quentin was present when Curtis was unmasked in the Arrowcave.
 * 9) Cisco Ramon: When arriving to the Arrowcave to find Oliver, John, Thea, Ray, and Sara he was introduced to Curtis.
 * 10) Adrian Chase: Evelyn told Adrian the identities of all the members of Team Arrow.
 * 11) Paul Holt: Curtis told Paul that he is Mr. Terrific after Prometheus attacked him in front of Paul.
 * 12) Billy Malone: During his investigation of Prometheus, Billy discovered that Curtis is Mr. Terrific.
 * 13) Dinah Drake: Dinah learned of Curtis' identity as Mr. Terrific; after she joined Team Arrow.
 * 14) Lyla Michaels: It's possible that Lyla knows about Curtis being Mr. Terrific.

Jefferson Jackson and Martin Stein/Firestorm

 * 1) Team Flash: Previously aware of Martin's identity from his association with Ronnie Raymond, researched possible candidates to replace Ronnie as Firestorm, leading them to find Jax.
 * 2) Clarissa Stein: Became aware of Jax's identity as Martin's new partner (off-screen) shortly before or after the new Firestorm returned to Philadelphia.
 * 3) Henry Hewitt: Told by Caitlin about Firestorm's powers as he was the second potential meta-human partner to Martin. Found out about Jax's identity when the new Firestorm confronted him with the Flash.
 * 4) Rip Hunter: Being a former Time Master, Rip must have known about Firestorm to choose them for his team.
 * 5) Sara Lance: Sara saw Firestorm when the team battled Chronos.
 * 6) Ray Palmer: Ray saw Firestorm when the team battled Chronos.
 * 7) Kendra Saunders: Kendra saw Firestorm when the team battled Chronos.
 * 8) Carter Hall: Carter saw Firestorm when the team battled Chronos.
 * 9) Leonard Snart: Leonard saw Firestorm when the team battled Chronos.
 * 10) Mick Rory: Mick saw Firestorm when the team battled Chronos.
 * 11) Vandal Savage: Being in league with the Time Masters and encountering the team so many times throughout history, Vandal became aware of Jax and Martin's identity as Firestorm.
 * 12) Valentina Vostok: Valentina had been working on a Soviet Firestorm project in Russia for about 10 years before the team traveled to the year 1986 and realized what her and Vandal were working on. She became aware that Martin was one half of Firestorm when she lifted up his sleeve and saw Jax's hidden message on it due to there Psychic link.
 * 13) Connor Hawke: Traveling to the year 2046 in Star City, the team ran into Connor, the new Green Arrow, giving away Firestorm's identity.
 * 14) Ra's al Ghul: Ra's saw Firestorm fight when Chronos came to Nanda Parbat in the year 1960.
 * 15) Jonah Hex: Jonah saw Firestorm fight against the Hunters traveling to the year 1871.
 * 16) Nate Heywood: Joining the Legends from being an historian, Nate saw Firestorm fight against Damien Darhk in 1942.
 * 17) Justice Society of America: When encountering the JSA, everyone including Henry Heywood, Charles, Todd Rice, Courtney and Amaya Jiwe saw Jax and Martin merge into Firestorm when they fought against each other.
 * 18) Eobard Thawne: Due to him being a time traveler, Eobard knows about all the Legends identities, including Firestorm.
 * 19) Kara Danvers: After traveling to Earth One to help with the Dominators, Jax and Martin confirmed their dual identities as Firestorm to Kara.
 * 20) H.R. Wells: After everyone gathered to help with the Dominators, H.R. overheard Jax and Martin confirming their dual identities as Firestorm.
 * 21) Oliver Queen: Oliver was present when Jax and Martin confirmed their dual identities as Firestorm to Kara.
 * 22) John Diggle: John was present when Jax and Martin confirmed their dual identities as Firestorm to Kara.
 * 23) Thea Queen: Thea was present when Jax and Martin confirmed their dual identities as Firestorm to Kara.
 * 24) Iris West: Iris was present when Jax and Martin confirmed their dual identities as Firestorm to Kara.
 * 25) Felicity Smoak: Felicity was present when Jax and Martin confirmed their dual identities as Firestorm to Kara.
 * 26) Lily Stein: Martin told Lily that he is half of Firestorm, even though she didn't believe him.

Amaya Jiwe/Vixen

 * 1) Justice Society of America: Being recruited by the JSA, it is assumed all the members including Rex Tyler, Henry Heywood, Charles, Todd Rice and Courtney knew her identity.
 * 2) Sara Lance: When fighting against the JSA in 1942, Sara saw Amaya in her full Vixen get-up.
 * 3) Ray Palmer: When fighting against the JSA in 1942, Ray saw Amaya in her full Vixen get-up.
 * 4) Nate Heywood: When fighting against the JSA in 1942, Nate saw Amaya in her full Vixen get-up.
 * 5) Jefferson Jackson: When fighting against the JSA in 1942, Jax saw Amaya in her full Vixen get-up.
 * 6) Martin Stein: When fighting against the JSA in 1942, Martin saw Amaya in her full Vixen get-up.
 * 7) Mick Rory: When fighting against the JSA in 1942, Mick saw Amaya in her full Vixen get-up.
 * 8) Eobard Thawne: Due to him being a time traveler, Eobard knows about all the members in the JSA dubbing them as a "group of super soldiers".
 * 9) Jonah Hex: When the Legends and Hex fought Turnbull and his in the bar, he saw Amaya use her powers.
 * 10) Barry Allen: Barry saw Amaya in her Vixen suit at the S.T.A.R. Labs hall.
 * 11) Caitlin Snow: Caitlin saw Amaya in her Vixen suit at the S.T.A.R. Labs hall.
 * 12) Cisco Ramon: Cisco saw Amaya in her Vixen suit suit at the S.T.A.R. Labs hall.
 * 13) Joe West: Joe saw Amaya in her Vixen suit at the S.T.A.R. Labs hall.
 * 14) Iris West: Iris saw Amaya in her Vixen suit at the S.T.A.R. Labs hall.
 * 15) H.R. Wells: H.R. saw Nate in his Steel suit at the S.T.A.R. Labs hall.
 * 16) Oliver Queen: Oliver saw Amaya in her Vixen suit at the S.T.A.R. Labs hall.
 * 17) John Diggle: John saw Amaya in her Vixen suit at the S.T.A.R. Labs hall.
 * 18) Felicity Smoak: Felicity saw Amaya in her Vixen suit at the S.T.A.R. Labs hall.
 * 19) Curtis Holt: Curtis saw Amaya in her Vixen suit at the S.T.A.R. Labs hall.
 * 20) Rene Ramirez: Rene saw Amaya in her Vixen suit at the S.T.A.R. Labs hall.
 * 21) Rory Regan: Rory saw Amaya in her Vixen suit at the S.T.A.R. Labs hall.
 * 22) Thea Queen Thea saw Amaya in her Vixen suit at the S.T.A.R. Labs hall.
 * 23) Kara Danvers: Kara saw Amaya in her Vixen suit at the S.T.A.R. Labs hall.
 * 24) Malcolm Merlyn: Malcolm saw Amaya in her Vixen suit.
 * 25) Damien Darhk: Damien saw Amaya in her Vixen suit.
 * 26) Leonard Snart: Leonard saw Amaya in her Vixen suit.

Laurel Lance/Black Canary

 * 1) Roy Harper: Roy learned of Laurel's identity while stopping a mugger.
 * 2) John Diggle: John learned of Laurel's identity after Roy helped her, which led to him finding out quickly.
 * 3) Felicity Smoak: Believing that the Canary was back, but it wasn't Sara, Felicity discovered that it was in fact Laurel.
 * 4) Ted Grant: Ted inferred that Laurel was the Black Canary after watching the news.
 * 5) Oliver Queen: Oliver learned about Laurel's alter-ego through his team.
 * 6) Quentin Lance: Quentin was able to assume that Laurel was taking her sister's place as a vigilante while she way away, but later found out that Sara was in fact dead.
 * 7) Thea Queen: Thea found out after walking into the foundry and seeing Laurel in suit after the latter was injected with Vertigo.
 * 8) Ray Palmer: Ray was able to infer that due to Laurel attempts to keep the Arrow safe at all costs, she was Black Canary.
 * 9) Barry Allen: Felicity explained that she had a complicated life, among that knowing that Laurel was Black Canary.
 * 10) Cisco Ramon: Laurel told Cisco that she was Black Canary when asking for his help with the Canary Cry.
 * 11) Tatsu Yamashiro: In Nanda Parbat, Laurel stood unmasked in front of Tatsu.
 * 12) John Constantine: When attempting to recover Sara Lance's soul, Laurel was dressed in her Black Canary outfit. It can be presumed that John can figure out her identity.
 * 13) Sara Lance: After she was resurrected Sara saw Laurel in full Black Canary get-up.
 * 14) Caitlin Snow: While working with Team Arrow to protect Kendra and Carter from Vandal Savage, Caitlin found out that Laurel was Black Canary.
 * 15) Carter Hall
 * 16) Kendra Saunders
 * 17) Mari McCabe: Mari is aware of Laurel's alter-ego after Oliver took her down to the bunker.
 * 18) Samantha Clayton: Much like Mari, Samantha is also aware of Laurel's alter-ego after Oliver took her down to the bunker.
 * 19) Curtis Holt: After wishing to help Felicity during Brie Larvan's attack on Palmer Technologies, Curtis accidentally stumbled upon Team Arrow in their outfits.
 * 20) Damien Darhk: Having deduced that Oliver Queen is Green Arrow, Damien was able to figure out that Oliver's ex-girlfriend, Laurel, was Black Canary.
 * 21) Dr. Schwartz: After Laurel was stabbed by Damien Darhk, Oliver was forced to take her to Starling General Hospital while still suited up. While other employees saw them, Dr. Schwartz worked on her alone and removed her mask and gear before taking her to surgery, and so the other doctors did not see Laurel in her Black Canary suit; unmasked.
 * 22) Andy Diggle: Andy learned of all the alter-egos of Team Arrow after he was reunited with John.
 * 23) Dinah Lance: Laurel's identity was revealed to Dinah by Oliver at her daughter's funeral.
 * 24) People of Star City: At Laurel's funeral, Oliver publicly reveals that Laurel was in fact Black Canary and died a hero instead of a criminal that people thought she was due to someone masquerading as her killing people after she died in the hospital, this means Laurel being Black Canary is no longer a secret.

Sara Lance/The Canary/White Canary
Sara began her duty as a vigilante called "The Canary". After resurrected from Lazarus Pit, she now goes by the name "White Canary". As White Canary Sara no longer has a secret identity.
 * 1) League of Assassins: The entire League, including the likes of Ra's al Ghul, Nyssa al Ghul and Al-Owal, were aware of Sara's vigilantism in Starling City, due to her having trained with them.
 * 2) Sin: After saving her from being raped by a group of men, Sara revealed her identity to Sin.
 * 3) Oliver Queen: Oliver trapped the Canary with a bunch of ropes attached to arrows, only to take off her mask to reveal Sara. He in turn revealed his identity.
 * 4) Team Arrow: When Sara joined Oliver's team, she met John Diggle and Felicity Smoak. Later when Roy Harper joined Team Arrow, he learned of Sara's secret.
 * 5) Quentin Lance: When the League of Assassins began to hunt Sara down, under orders from Nyssa al Ghul, Sara decided that the best way to protect her family was to reveal her secret identity, thus giving them a full idea of the dangerous situation. She revealed this to her father, Quentin, who was initially shocked at her appearance, though accepting of her actions.
 * 6) A.R.G.U.S.: Amanda Waller and Lyla Michaels were aware of who Sara was and what she did.
 * 7) Slade Wilson: When Slade began to hunt down Oliver and destroy him, Oliver's team fought back. In the midst of this, Slade was made aware of Sara still being alive, and further inferred Sara's vigilantism.
 * 8) Laurel Lance: When Laurel saw Sara's injuries after Slade's attack, she was nearly heartbroken on learning this.
 * 9) Caitlin Snow: After Felicity gave her some evidence to process in regards to the Canary's death, Caitlin openly called her "Sara", somehow knowing who the Canary was. However it is possible that she learned Sara's identity when studying the DNA on the arrows.
 * 10) Cisco Ramon: As Caitlin openly named the Canary as Sara, either Cisco was already aware of her identity, or he became aware then.
 * 11) Thea Queen: After Sara was resurrected Thea saw her in full Canary get-up.
 * 12) Barry Allen: Barry saw Sara in her White Canary suit at the S.T.A.R. Labs hall.
 * 13) Kara Danvers: Kara saw Sara in her White Canary suit at the S.T.A.R. Labs hall.
 * 14) H.R. Wells: H.R. saw Sara in her White Canary suit at the S.T.A.R. Labs hall.
 * 15) Iris West: Iris saw Sara in her White Canary suit at the S.T.A.R. Labs hall.

Malcolm Merlyn/Dark Archer/Ra's al Ghul

 * 1) League of Assassins: The entire league, including Ra's al Ghul, Nyssa al Ghul and Al-Owal, are aware of Malcolm's secret identity, and are all unhappy about what he'd done.
 * 2) Team Arrow: Following Malcolm's reveal to the Hood about him being the Dark Archer, Oliver's entire team is aware of Malcolm's alter-ego, consisting of Oliver Queen, John Diggle, Felicity Smoak, Laurel Lance, Sara Lance and Roy Harper.
 * 3) Tommy Merlyn: After Moira Queen revealed Malcolm's plan to destroy the Glades and everyone in it, as well as how many people he has killed in pursuit of this insane goal of his in a press conference, also revealing herself as the latter's unwilling accomplice, Malcolm revealed his panic room to Tommy, fully equipped with his Dark Archer suit and equipment.
 * 4) Moira Queen: Dark Archer vanished when Malcolm "apparently died" in the undertaking. Malcolm revealed himself to Moira, wielding his bow. She then connected the dots.
 * 5) Thea Queen: As Thea was about to be killed by one of Slade Wilson's soldiers, Malcolm intervened and pulled off his mask to reveal his identity to her.
 * 6) Danny Brickwell: After Malcolm tracked down Danny and prepared to avenge his wife, he revealed his own identity during the confrontation.
 * 7) Ray Palmer: While trapped in Nanda Parbat, Ray saw Malcolm unmasked.
 * 8) Barry Allen: Barry helped to rescue Malcolm and the rest of them from their dungeon in Nanda Parbat.
 * 9) Tatsu Yamashiro: In Nanda Parbat, Malcolm stood unmasked in front of Tatsu.
 * 10) Damien Darhk: When he confronts Thea it's revealed Damien knows Malcolm is the new Ra's al Ghul.
 * 11) Kendra Saunders: When facing Vandal Savage Malcolm appears in the Arrowcave in full League get-up.
 * 12) Cisco Ramon: While in the Arrowcave protecting Kendra Saunders he saw Malcolm appear in full League attire
 * 13) Quentin Lance: While in the Arrowcave Malcolm tells Quentin straight up "I am Ra's al Ghul".
 * 14) Eobard Thawne: Due to him being from the future, Eobard is aware of Malcolm's identities as the Dark Archer and Ra's al Ghul; respectively.
 * 15) Rip Hunter: As a former Time Master, Rip knows that Malcolm is the Dark Archer and Ra's al Ghul; respectively.
 * 16) Jefferson Jackson: Jax is aware of Malcolm's identities as the Dark Archer and Ra's al Ghul; respectively.
 * 17) Martin Stein: Martin is aware of Malcolm's identities as the Dark Archer and Ra's al Ghul; respectively.
 * 18) Nate Heywood: Nate is aware of Malcolm's identities as the Dark Archer and Ra's al Ghul; respectively.
 * 19) Mick Rory: Mick is aware of Malcolm's identities as the Dark Archer and Ra's al Ghul; respectively.
 * 20) Amaya Jiwe: Amaya is aware of Malcolm's identities as the Dark Archer and Ra's al Ghul; respectively.
 * 21) Kara Danvers: Barry told Kara about Malcolm while they were in a musical dream world.

Ray Palmer/The Atom

 * 1) Felicity Smoak: After he'd been holed up trying to finish his exosuit, Ray caved and allowed Felicity to see his progress, while at the same time asking for her help in his endeavour.
 * 2) Oliver Queen: When Ray discovered the identity of the Arrow, Felicity came to tell Oliver about the suit he'd been making.
 * 3) Roy Harper: When Ray discovered the identity of the Arrow, Felicity came to tell Oliver about the suit he'd been making, as Roy was present during the conversation between Oliver and Felicity.
 * 4) Barry Allen: When Ray flew in to Central City, Barry saw him in full view as the Atom.
 * 5) Cisco Ramon: When Ray flew in to Central City, Cisco saw him in full view as the Atom.
 * 6) Caitlin Snow: When Ray flew in to Central City, Caitlin saw him in full view as the Atom.
 * 7) Eobard Thawne: When Ray flew in to Central City, Eobard saw him in full view as the Atom.
 * 8) John Diggle: When Oliver's team allied with Ray to take down a meta-human, John seemed already aware of Ray's suit, as he was probably informed by the team.
 * 9) Malcolm Merlyn: While trapped in Nanda Parbat, Malcolm saw Ray unsuited.
 * 10) Tatsu Yamashiro: In Nanda Parbat, Tatsu saw Ray unsuited.
 * 11) Damien Darhk: Damien kidnapped a miniaturized Ray in his exosuit after intercepting his message to Felicity.
 * 12) Rip Hunter: As a former Time Master, Rip knows that Ray is the Atom.
 * 13) Leonard Snart: Leonard saw Ray in full Atom get-up when the team fought Chronos.
 * 14) Mick Rory: Mick saw Ray in full Atom get-up when the team fought Chronos.
 * 15) Sara Lance: Sara saw Ray in full Atom get-up when the team fought Chronos.
 * 16) Kendra Saunders: Kendra saw Ray in full Atom get-up when the team fought Chronos.
 * 17) Carter Hall: Carter saw Ray in full Atom get-up when the team fought Chronos.
 * 18) Jefferson Jackson: Jax saw Ray in full Atom get-up when the team fought Chronos.
 * 19) Martin Stein: Martin saw Ray in full Atom get-up when the team fought Chronos.
 * 20) Vandal Savage: Being in league with the Time Masters and encountering the team so many times throughout history, Vandal became aware of Ray's identity as the Atom.
 * 21) Connor Hawke: Traveling to the year 2046 in Star City, the team ran into Connor, the new Green Arrow, giving away Ray's identity.
 * 22) Ra's al Ghul: Ra's saw Ray in his full Atom suit fight when Chronos came to Nanda Parbat in the year 1960.
 * 23) Jonah Hex: Jonah saw Ray in his full Atom suit fight against The Hunters traveling to the year 1887.
 * 24) Nate Heywood: Joining the Legends from being an historian, Nate saw Ray fight against Damien Darhk in 1942.
 * 25) Justice Society of America: The entire JSA, including Henry Heywood, Charles, Todd Rice, Courtney and Amaya Jiwe saw Ray fight in his Atom suit against the Nazis in 1942.
 * 26) Eobard Thawne: Due to him being a time traveler, Eobard knows about all the Legends identities, including Ray.
 * 27) Kara Danvers: After traveling to Earth One to help with the Dominators, Ray confirmed his identity as the Atom to Kara.
 * 28) H.R. Wells: After everyone gathered to help with the Dominators, H.R. overheard Ray confirming his identity as the Atom.
 * 29) Iris West: Iris was present when Ray confirming his identity as the Atom to Kara.

Oliver Queen/The Hood/The Arrow/Al Sah-him/Green Arrow
Oliver initially acted as a vigilante known as The Hood. A year later he began to be known as a hero, The Arrow. However, 2 years later Oliver joined the League of Assassins, apparently becoming a darker version of himself, known as Al Sah-him. 6 months after coming out of retirement, Oliver now goes under the codename Green Arrow.
 * 1) Lodai: Since Lodai is Oliver's supplier for all of his vigilante equipment and activities, it is very likely that he is aware of Oliver's secret identity.
 * 2) John Diggle: Oliver was forced to reveal his identity as the Hood when John was shot by Deadshot, and had to recuperate in Oliver's base after being given medicine. John initially did not accept Oliver's vigilantism, but later was accepting and joined Oliver's vigilante team.
 * 3) Quentin Lance: Quentin had originally discovered Oliver's secret through a security camera from the Exchange Building, unknown to Quentin, Oliver set the whole thing up, to exonerate himself, his belief that Oliver is the Hood, was proven to be (seemingly) untrue when the Vigilante, appeared on the other side of town, well the former was under house arrest at the time, however it was actually Oliver's bodyguard John Diggle. 2 years later when Quentin ordered a manhunt on the Arrow (who was being framed by the League of Assassins for murder), Ra's al Ghul had him kidnapped and told him Oliver's secret, hoping to further turn the city against Oliver. They got partway to taking him to prison, but Roy Harper intervened wearing the suit (despite Quentin's having seen him in his own suit).
 * 4) Derek Reston: After saving his son, Derek was shot, and in his dying moments Oliver decided to reveal his identity to him.
 * 5) Helena Bertinelli: After Oliver realized that Helena was the Huntress, he helped save her, and she in turn discovered the Hood's identity. Helena joined Oliver's team, helping to fight crime, however, she was too blinded by her hatred for her father, and left.
 * 6) Felicity Smoak: Following Oliver being shot by his mother, Moira Queen, when he tried interrogating her, he lay in the back of Felicity's car with a wound. He revealed his identity to her, and the two of them drove to Robert Queen's warehouse, where Oliver's base lay beneath. Once there, Felicity and John operated on him.
 * 7) Tommy Merlyn: When his father, Malcolm Merlyn, was shot by Deadshot, Oliver revealed his identity to Tommy in order to trust him to save his father's life. Tommy was conflicted over Oliver's revelation and often argued with him over his actions, although Tommy ultimately kept the secret.
 * 8) Webb: After trying to stop the production of Vertigo, Oliver was drugged with it and knocked out. He was strapped down, only to escape and kill Dr. Webb.
 * 9) Webb's accomplice: When Dr. Webb trapped Oliver, the two of them learned his true identity. He was ultimately killed by John Diggle when he escaped.
 * 10) Malcolm Merlyn: Oliver went after Malcolm, who revealed his identity as the Dark Archer. Malcolm ultimately won the fight, pulling off Oliver's hood in shock.
 * 11) Sara Lance: For over a year Sara suspected Oliver to be the Hood, later the Arrow, and she finally discovered that her suspicions were true when her identity was revealed to Oliver. She joined Oliver's team not long after that.
 * 12) Al-Owal: Al-Owal broke in to the Queen Mansion while Sara was staying there. Not only did he know of her whereabouts, but he also knew of Oliver's alter-ego, the Arrow. It's possible he knew it due to Malcolm, his former protégé, knowing it.
 * 13) A.R.G.U.S.: Some members of A.R.G.U.S., including the likes of Amanda Waller and Lyla Diggle, are aware of Oliver's secret identity, as well as his associates, John Diggle and Felicity Smoak.
 * 14) Count Vertigo: The Count was able to deduce Oliver's identity as the Arrow solely due to his large connection to Felicity Smoak, who also had a large connection to the Arrow. He used his knowledge of this connection to lure Oliver to Queen Consolidated, where Oliver confirmed his ideas of Oliver's identity, only to be killed when the Count almost killed Felicity.
 * 15) Barry Allen: Felicity and John made the call to reveal Oliver's secret identity to Barry when Oliver was poisoned by unknown chemicals from an A.R.G.U.S. disaster bunker, following his fight with a Mirakuru-enhanced Cyrus Gold. Oliver was annoyed at this, although soon came to terms with it and accepted Barry.
 * 16) Slade Wilson: For the entire time that Oliver acted as the Hood, then the Arrow, Slade had figured that he was indeed Oliver, due to the green hood's significance - a reference to that of Yao Fei and Shado's hood. He made it his sole purpose to destroy Oliver's life and reverse his heroic deeds.
 * 17) League of Assassins: The entirety of League of Assassins, including the likes of Ra's al Ghul, Nyssa al Ghul and Maseo Yamashiro who know about Oliver as the Arrow.
 * 18) Roy Harper: Oliver was forced to reveal his secret identity to a Mirakuru-enhanced Roy in order to calm him down, to stop him from beating Ben Turner to death. Roy later joined Oliver's team, but left the team, because he (correctly) blamed Oliver for Thea getting kidnapped by Slade Wilson. He later rejoined after they get the Mirakuru out of him and becomes Oliver's partner.
 * 19) Isabel Rochev: Due to being in league with Slade Wilson, a fact which she eventually revealed to Oliver, Isabel was aware of Oliver being the Arrow.
 * 20) Laurel Lance: When Slade Wilson began publicly ruining Oliver's life, he turned up at Laurel's door to tell her of Oliver's identity as the Arrow. Laurel was initially shocked and began to add up the clues, but after advice from her father, decided that it was best to not approach Oliver about it and allow him to do his job.
 * 21) Moira Queen: While having a conversation about Thea, Moira also revealed to Oliver that she had figured that Oliver was the vigilante since around the events of the Undertaking, and before Oliver could say a thing, Moira expressed that she couldn't be prouder.
 * 22) Sebastian Blood: When having dinner, Sebastian was joined by Oliver who started a conversation about Slade Wilson before saying "I'm the Arrow". Sebastian didn't seem overly surprised at the discovery.
 * 23) Eobard Thawne: After the Arrow and his team came to Central City to help the Flash and his team, Eobard wished to learn the Arrow's identity in order to put his faith in him, though Felicity reasoned that it wasn't her secret to tell. However, he was later able to simply guess who he was to Felicity (possibly using his knowledge of the future).
 * 24) Joe West: Eobard was able to simply guess the Arrow's identity in front of everyone members and associates of Team Flash, Felicity confirms it.
 * 25) Caitlin Snow: Eobard was able to simply guess the Arrow's identity in front of everyone members and associates of Team Flash, Felicity confirms it.
 * 26) Cisco Ramon: Eobard was able to simply guess the Arrow's identity in front of everyone members and associates of Team Flash, Felicity confirms it.
 * 27) Thea Queen: Oliver revealed his identity after he decided that it was safer if she knew, what with the threat of Ra's al Ghul.
 * 28) Ray Palmer: Ray tracked down the Arrow and used his helmet's x-ray vision to see Oliver's face.
 * 29) Firestorm (Ronnie Raymond and Martin Stein): Firestorm saw Oliver unmasked during the battle with the Reverse-Flash.
 * 30) John Constantine: When attempting to recover Sara Lance's soul, Oliver was dressed in his Green Arrow suit. it can be presumed that John can figure out his identity.
 * 31) Kendra Saunders: Kendra saw Oliver unmasked when Thea introduced him to her.
 * 32) Carter Hall: Carter saw Oliver unmasked while being chained in Arrowcave.
 * 33) Vandal Savage: Vandal came in Oliver's apartment and attacked Team Arrow and Team Flash for Kendra Saunders.
 * 34) Mari McCabe: After meeting Vixen, Green Arrow and the Flash maintained a friendship with her and revealed their identities. While visiting Star City she confirmed that she knew Oliver's identity.
 * 35) Samantha Clayton: When asking what Oliver was going to do to get William back after his kidnapping, Oliver revealed his identity as Green Arrow to her.
 * 36) Jefferson Jackson: When being attacked by Conner Hawke, Sara mentioned that Green Arrow is not Oliver, giving away his identity.
 * 37) Leonard Snart: When being attacked by Conner Hawke, Sara mentioned that Green Arrow is not Oliver, giving away his identity.
 * 38) Mick Rory: When being attacked by Conner Hawke, Sara mentioned that Green Arrow is not Oliver, giving away his identity.
 * 39) Rip Hunter: Coming from the year 2166, it is highly likely that Rip has knowledge on who heroes identities are, including Oliver.
 * 40) Curtis Holt: After wishing to help Felicity during Brie Larvan's attack on Palmer Technologies, he accidentally stumbled upon Team Arrow in their outfits.
 * 41) Damien Darhk: After Team Arrow came after William Clayton, Oliver's son, Damien deduced that this was the case, believing the look in Green Arrow's eyes to be that of a father's. It was only later during his incarceration that he revealed his discovery to Oliver.
 * 42) Andy Diggle: Andy learned of all the alter-egos of Team Arrow after he was reunited with John.
 * 43) Dr. Schwartz: When Oliver brought Laurel, who was still suited up as Black Canary, to the hospital as Green Arrow, he presumably returned to wait outside her operating room as Oliver, which both later readdressed.
 * 44) Evelyn Sharp: Oliver revealed his identity to Evelyn in order to build trust that he was risking losing due to his brutal training methods.
 * 45) Rene Ramirez: Oliver revealed his identity to Rene in order to build trust that he was risking losing due to his brutal training methods.
 * 46) Nate Heywood: When seeking help to recover the missing Legends, Nate revealed that he had figured out that Oliver is Green Arrow, piecing together when the archer returned to the city and when Oliver did.
 * 47) Rory Regan: After joining Team Arrow Oliver revealed his identity to Rory.
 * 48) Christopher Chance: After faking Oliver death, Christopher was taken down to the Arrowcave, where he found out that Oliver was Green Arrow, although it is presumed he already knew.
 * 49) Tobias Church: After kidnapping Rene Ramirez Church tortured Rene to get the identity of Green Arrow.
 * 50) Adrian Chase: Before killing Tobias Church, he revealed to Adrian (Under the guise of Prometheus) the identity of Green Arrow. However, it is later revealed that Adrian was already aware of Oliver being a vigilante, as he somehow knows of his secret previous identities as the Hood and the Arrow; respectively.
 * 51) Kara Danvers: After traveling to Earth One to help with the Dominators, Oliver confirmed his identity as Green Arrow to Kara.
 * 52) Iris West: After coming together to fight the Dominators, Barry confirmed Oliver's identity as Green Arrow to Iris.
 * 53) H.R. Wells: After everyone gathered to help with the Dominators, H.R. overheard Oliver confirming his identity as Green Arrow.
 * 54) Billy Malone: When Adrian as Prometheus dressed up Malone as his decoy, Adrian attached a speaker to his chest with a recording mentioning Oliver's name, before being accidentally killed by Oliver himself.
 * 55) Laurel Lance (Earth Two): After Adrian as Prometheus freed her from the Pipeline at S.T.A.R. Labs, he had her pretend to be the Laurel from Earth One.
 * 56) Dinah Drake: Oliver revealed who he was to Dinah in order to gain her trust.
 * 57) Susan Williams: Susan was able to deduce that Oliver is Green Arrow by piecing together photos of him in Russia at the same time that a hooded archer was there. She later asked Oliver, and although he denied it, she was publicly outed as a supposed fraud, leading her to believe that it was poor timing on Oliver's part, thus confirming the truth.
 * 58) Anatoly Knyazev: Oliver informed Anatoly of his identity as Green Arrow (off-screen).
 * 59) William Clayton: William saw Oliver unmasked in his Green Arrow suit.

Thea Queen/Speedy

 * 1) Roy Harper: It was Roy that indirectly suggested to Thea that she take on his mantle as Speedy by leaving her his suit.
 * 2) John Diggle: Thea saved John from being killed by a thug of Ra's al Ghul's, in full Speedy get-up.
 * 3) Oliver Queen: After defeating Ra's al Ghul, Thea stood with the others, unmasked. Oliver also suggested her to take up the name "Speedy" and asked the rest of Team Arrow to call her that.
 * 4) Laurel Lance: After defeating Ra's al Ghul, Thea stood with the others, unmasked. Oliver also suggested her to take up the name "Speedy" and asked the rest of Team Arrow to call her that.
 * 5) Felicity Smoak: After defeating Ra's al Ghul, Thea stood with the others, unmasked. Oliver also suggested her to take up the name "Speedy" and asked the rest of Team Arrow to call her that.
 * 6) Ray Palmer: After defeating Ra's al Ghul, Thea stood with the others, unmasked. Oliver also suggested her to take up the name "Speedy" and asked the rest of Team Arrow to call her that.
 * 7) Malcolm Merlyn: After defeating Ra's al Ghul, Thea stood with the others, unmasked. Oliver also suggested her to take up the name "Speedy" and asked the rest of Team Arrow to call her that.
 * 8) Nyssa al Ghul: After defeating Ra's al Ghul, Thea stood with the others, unmasked. Oliver also suggested her to take up the name "Speedy" and asked the rest of Team Arrow to call her that.
 * 9) Sara Lance: After being resurrected Sara sees Thea in full Speedy get-up.
 * 10) Barry Allen: After rescuing Oliver, Barry and Team Arrow returned to the Arrowcave with Thea unmasked.
 * 11) Cisco Ramon: After entering the Arrowcave, Cisco saw Thea unmasked.
 * 12) Kendra Saunders: After entering the Arrowcave, Kendra saw Thea unmasked.
 * 13) Carter Hall: Carter saw Thea unmasked while chained up in the Arrowcave.
 * 14) Caitlin Snow: When working with Team Arrow to protect Kendra and Carter from Vandal Savage she found out that Thea is Speedy.
 * 15) Mari McCabe: Mari is aware of Thea's alter-ego after Oliver took her down to the bunker.
 * 16) Samantha Clayton: Much like Mari, Samantha is also aware of Thea's alter-ego after Oliver took her down to the bunker.
 * 17) Curtis Holt: After wishing to help Felicity during Brie Larvan's attack on Palmer Technologies, he accidentally stumbled upon Team Arrow in their outfits.
 * 18) Damien Darhk: Having deduced that Oliver is Green Arrow, Damien was able to figure out that Oliver's half-sister, Thea is Speedy.
 * 19) Andy Diggle: Andy learned of all the alter-egos of Team Arrow after he was reunited with John.
 * 20) Kara Danvers: After traveling to Earth One to help with the Dominators, Thea confirmed her identity as Speedy to Kara.
 * 21) H.R. Wells: After everyone gathered to help with the Dominators, H.R. overheard Thea confirming her identity as Speedy.
 * 22) Iris West: After everyone gathered to help with the Dominators, Iris overheard Thea confirming her identity as Speedy.
 * 23) Nate Heywood: After the Legends rescued Oliver, John, Thea, Ray, and Sara Nate greeted them upon arriving on the Waverider. It's possible that he was told that Thea is Speedy.
 * 24) Rene Ramirez: It's possible that Rene knows about Thea being Speedy.
 * 25) Rory Regan: It's possible that Rory knows about Thea being Speedy.
 * 26) Evelyn Sharp: It's possible that Evelyn knows about Thea being Speedy.
 * 27) Quentin Lance: It's possible that Quentin knows about Thea being Speedy.
 * 28) Lyla Michaels: It's possible that Lyla knows about Thea being Speedy.

Jesse Wells/Jesse Quick

 * 1) Harry Wells: Sometime after returning to Earth Two, Harry saw Jesse's super powers manifested (off-screen).
 * 2) Julian Albert:
 * 3) Barry Allen: After Jesse returned to Earth One, Barry saw her using her super speed.
 * 4) Joe West: After Jesse returned to Earth One, Joe saw her using her super speed.
 * 5) Cisco Ramon: After Jesse returned to Earth One, Cisco saw her using her super speed.
 * 6) Caitlin Snow: After Jesse returned to Earth One, Caitlin saw her using her super speed.
 * 7) Iris West: After Jesse returned to Earth One, Iris saw her using her super speed.
 * 8) Wally West: After Jesse returned to Earth One, Wally saw her using her super speed.
 * 9) H.R. Wells: H.R. became acquainted with Jesse shortly before she returned to Earth Two; after he joined Team Flash, H.R. became aware of Jesse's identity as Jesse Quick.
 * 10) Jay Garrick: Jay is aware of Jesse's identity as Jesse Quick.
 * 11) Barry Allen (Savitar): Savitar knows that Jesse is Jesse Quick; due to the fact that he is the present Barry's future time remnant.

Rene Ramirez/Wild Dog

 * 1) Oliver Queen: When Oliver started recruiting a new team of vigilantes, he ask Felicity to find out Wild Dog's identity.
 * 2) Felicity Smoak: After Oliver encountered Rene as Wild Dog, Felicity was able to identify him.
 * 3) Curtis Holt: Curtis became aware of Rene's identity as Wild Dog; after he joined Team Arrow.
 * 4) Evelyn Sharp: Evelyn became aware of Rene's identity as Wild Dog; after she joined Team Arrow.
 * 5) Rory Regan: Rory became aware of Rene's identity as Wild Dog; soon after he joined Team Arrow.
 * 6) Thea Queen: Thea encountered Rene unmasked in the Arrowcave.
 * 7) Quentin Lance: Quentin encountered Rene unmasked in the Arrowcave.
 * 8) Tobias Church: Tobias was able to capture and unmask Rene, Rene likely also revealed his name while being tortured.
 * 9) Lyla Michaels: Due to being affiliated with Team Arrow, Lyla appears to be aware of Rene's identity as Wild Dog.
 * 10) Cisco Ramon: When arriving to the Arrowcave to help find Oliver, Thea, John, Ray, and Sara he was introduced to Rene.
 * 11) Barry Allen: Barry was present when Rene unmasked himself.
 * 12) Kara Danvers: Kara was present when Rene unmasked himself.
 * 13) Adrian Chase: Evelyn told Adrian the identities of all the members of Team Arrow.
 * 14) Dinah Drake: Oliver revealed Rene's identity as Wild Dog to Dinah.

Ronnie Raymond and Martin Stein/Firestorm

 * 1) Caitlin Snow: After Firestorm had stalked Caitlin, she followed him back to the Central City Shopping Mall garage, discovering that Ronnie was alive. However, wanting her to stay away, he used his pyrokinesis to create fire. She later learnt of the full nature of Firestorm from Cisco Ramon; that the two had merged.
 * 2) Cisco Ramon: After tracking him down in to sewers, Firestorm used his fire again to distract the two and run off. Cisco later learnt from Hartley Rathaway the true nature of Firestorm, that the two men had merged.
 * 3) Barry Allen: Firestorm saved Barry during his fight with the Reverse-Flash, before flying away through the use of his flames.
 * 4) Eobard Thawne: Eobard learned of the merging of Ronnie and Martin through his scientists, eventually figuring a way to allow them to separate temporarily, and then merge willingly to create harmony.
 * 5) Hartley Rathaway: Hartley discovered that Ronnie and Martin had merged through CCTV footage of the accident.
 * 6) Clarissa Stein: Barry's team explained to Clarissa about her husband's condition, and used her to convince Firestorm to let their team help them.
 * 7) Wade Eiling: Wade knew of the F.I.R.E.S.T.O.R.M. program, and kidnapped Martin so he could weaponize what made Firestorm so valuable.
 * 8) Iris West: Iris researched the "burning man" as part of her job and sensed a connection between him and Caitlin. When Iris discovered Barry's secret, Caitlin confirmed her theories.
 * 9) Oliver Queen: Oliver battled the Reverse-Flash with Firestorm and the Flash.
 * 10) Jefferson Jackson: After Team Flash convinced Jax to become the new Firestorm, Caitlin revealed that Martin's old partner was Ronnie, who died closing the singularity and that was part of what convinced Jax to take up the new mantle.

Rory Regan/Ragman

 * 1) Oliver Queen: Rory revealed his identity as Ragman to Oliver; after saving him from Tobias Church.
 * 2) Rene Ramirez: Rory revealed his identity as Ragman to Rene; soon after he joined Team Arrow.
 * 3) Curtis Holt: Rory revealed his identity as Ragman to Curtis; soon after he joined Team Arrow.
 * 4) Felicity Smoak: Rory revealed his identity as Ragman to Felicity; soon after he joined Team Arrow.
 * 5) Evelyn Sharp: Rory revealed his identity as Ragman to Evelyn; soon after he joined Team Arrow.
 * 6) Thea Queen: Thea is acquainted with Rory and the other recruits and appears to be aware of his identity as Ragman.
 * 7) John Diggle: John was acquanited with Rory after his return to Team Arrow.
 * 8) Cisco Ramon: When arriving to the Arrowcave to help find Oliver, Thea, John, Ray, and Sara, Cisco was introduced to Rory.
 * 9) Adrian Chase: Evelyn told Adrian the identities of all the members of Team Arrow.
 * 10) Dinah Drake: Dinah learned of Rory's identity as Ragman; after she joined Team Arrow.
 * 11) Lyla Michaels: It's possible that Lyla knows about Rory being Ragman.
 * 12) Quentin Lance: It's possible that Quentin knows about Rory being Ragman.

Evelyn Sharp/Artemis

 * 1) Team Arrow: Evelyn was already a member of Team Arrow before she became Artemis.
 * 2) Thea Queen: Thea encountered Evelyn unmasked in the Arrowcave.
 * 3) Quentin Lance: Quentin encountered Evelyn unmasked in the Arrowcave.
 * 4) Lyla Michaels: It's possible that Lyla knows about Evelyn being Artemis.
 * 5) Adrian Chase: Evelyn revealed her identity as Artemis to Adrian; when she joined him.

Eobard Thawne/Reverse-Flash

 * 1) Gideon: Gideon is a sentient computer friend of Eobard's and she knows of all his plans and that he is Reverse-Flash.
 * 2) Wade Eiling: Wade was abducted by Eobard and taken to the sewer where Grodd resides, and there he unmasked himself Wade.
 * 3) Grodd: When Eobard brought Wade to the sewer, he unmasked himself, just before Grodd attacked Wade, though it is likely Grodd knew ahead of time.
 * 4) Cisco Ramon: After Cisco picked up some high tachyon readings, he found Eobard's secret room along with his Reverse-Flash suit and a newspaper from 2024. Using memories of an alternate timeline, he discovered the truth and his identity of Eobard.
 * 5) Barry Allen: Barry was present when Cisco made the discovery.
 * 6) Caitlin Snow: Caitlin was present when Cisco made the discovery.
 * 7) Joe West: After having long-held suspicions, they were confirmed by Barry's team.
 * 8) Hannibal Bates: Eobard promised his freedom, if Hannibal pretended to be Eobard and confessed to being Reverse-Flash. However, he was ultimately killed, all of it having been set up.
 * 9) Eddie Thawne: After having suspicions along with the team, Eobard kidnapped Eddie and revealed his identity, also adding that the two are related.
 * 10) Iris West: Barry revealed to Iris in passing conversation that "Wells" was the man in yellow, the same one that killed his mother.
 * 11) Ronnie Raymond: Ronnie (in his Firestorm form) flew in and watched Eobard turn into the Reverse-Flash. However, it was likely that he was aware ahead of time.
 * 12) Martin Stein: Martin (in his Firestorm form) flew in and watched Eobard turn into the Reverse-Flash. However, it was likely that he was aware ahead of time.
 * 13) Oliver Queen: Oliver jumped in and watched Eobard turn into the Reverse-Flash. However, it was likely that he was aware ahead of time.
 * 14) Harry Wells: Harry became aware of Eobard's identity when his past self traveled to 2016 during his time tracking down the Flash.
 * 15) Hartley Rathaway: After Barry altered the timeline, Hartley became aware of Eobard's demise.
 * 16) Damien Darhk: As they are partners, Damien knows about Eobard being Reverse-Flash.
 * 17) Krieger: While Eobard was in 1942, he made a partnership with Krieger due to him being a high trusted Nazi and also saw him run without his suit on, confronting him.
 * 18) Malcolm Merlyn: As he is a partner of Eobard, he knows that he is the Reverse-Flash.
 * 19) Legends: Martin explained to the team who the Speedster they were fighting was.
 * 20) Sara Lance: Martin explained to Sara who the Speedster they were fighting was.
 * 21) Ray Palmer: Martin explained to Ray who the Speedster they were fighting was.
 * 22) Jefferson Jackson: Martin explained to Jax who the Speedster they were fighting was.
 * 23) Nate Heywood: Martin explained to Nate who the Speedster they were fighting was.
 * 24) Mick Rory: Martin explained to Mick who the Speedster they were fighting was.
 * 25) Amaya Jiwe: Martin explained to Amaya who the Speedster they were fighting was.
 * 26) Rip Hunter: Rip became aware of Eobard's identity as Reverse-Flash; after he was brainwashed by the latter and became a member of the Legion of Doom.
 * 27) Leonard Snart: Eobard recruited Leonard (from the year 2014) into the Legion of Doom, a year before he was recruited into the Legends and revealed his identity as Reverse-Flash to the latter.

Wally West/Kid Flash

 * 1) Julian Albert:
 * 2) Barry Allen:
 * 3) Kara Danvers:
 * 4) J'onn J'onzz:
 * 5) Mon-El:
 * 6) Music Meister:
 * 7) Oliver Queen:
 * 8) Jesse Quick:
 * 9) Cisco Ramon:
 * 10) Savitar:
 * 11) Caitlin Snow:
 * 12) H.R. Wells:
 * 13) Harry Wells:
 * 14) Iris West:
 * 15) Joe West:
 * 16) Cecile Horton: Joe informed Cecile of Wally's identity as Kid Flash (off-screen).

Hunter Zolomon/Zoom

 * 1) Jay Garrick: After he traveled between Earths, Hunter captured Jay and stole his identity on his own Earth.
 * 2) Cisco Ramon: When the team learned that Zoom needed the Speed Force for survival, Cisco vibed and saw Zoom unmasked.
 * 3) Barry Allen: After Cisco vibed Zoom unmasked, he told Barry of Zoom's identity.
 * 4) Caitlin Snow: After Cisco vibed Zoom unmasked, he told Caitlin of Zoom's identity.
 * 5) Joe West: After Cisco vibed Zoom unmasked, he told Joe of Zoom's identity.
 * 6) Iris West: After Cisco vibed Zoom unmasked, he told Iris of Zoom's identity.
 * 7) Harry Wells: After Cisco vibed Zoom unmasked, he told Harry of Zoom's identity.
 * 8) Caitlin Snow (Earth Two): As Hunter had affections for Earth One Caitlin, he imprisoned Earth Two Caitlin in his lair as a reminder of her, where he often left his mask off, so it can be assumed that Caitlin saw Hunter unmasked in his Zoom suit, during her imprisonment.
 * 9) Henry Allen: Barry told Henry of Zoom's true identity as the man they believed to be "Jay Garrick", but wasn't informed of his real name as Hunter Zolomon.
 * 10) Laurel Lance: Due to being a high trusted lieutenent in his meta-human group, Laurel knew who Zoom was as she was seen talking to him while he was unmasked.
 * 11) Wally West: After Zoom decided to take Joe hostage to force Barry into racing him on the Magnetar, when Zoom and Barry met up before they raced Team Flash came along, seeing Zoom unmasked with Joe next to him.
 * 12) Jesse Quick: After Zoom decided to take Joe hostage to force Barry into racing him on the Magnetar, when Zoom and Barry met up before they raced Team Flash came along, seeing Zoom unmasked with Joe next to him.

Dante Ramon/Rupture

 * 1) Hunter Zolomon: Hunter knows that Dante is Rupture.
 * 2) Francisco Ramon: Francisco knows that Dante is Rupture.
 * 3) Dante Ramon: Earth One Dante saw Earth Two Dante unmasked in his Rupture suit.
 * 4) Cisco Ramon: Cisco saw Earth Two Dante unmasked in his Rupture suit.
 * 5) Harry Wells: Harry knows that Earth Two Dante is Rupture.
 * 6) Barry Allen: Harry informed Barry of Earth Two Dante's identity as Rupture.
 * 7) Iris West: Harry informed Iris of Earth Two Dante's identity as Rupture.
 * 8) Joe West: Joe was informed of Earth Two Dante's identity as Rupture (off-screen).

Kal-El/Clark Kent/Superman

 * 1) Jeremiah Danvers: Clark came to Jeremiah so he could help Clark understand his own powers and is aware of his civilian identity.
 * 2) Eliza Danvers: Clark came to Eliza so she could help Clark understand his own powers and is aware of his civilian identity.
 * 3) Kara Danvers: When Kara arrived on Earth, she saw Clark in his Superman suit and is aware of his civilian identity.
 * 4) J'onn J'onzz: At some point J'onn discovered or Clark revealed his identity as Superman to him.
 * 5) James Olsen: At some point James discovered or Clark revealed his identity as Superman to him.
 * 6) Winn Schott: Kara and James argue about involving Superman in fighting Ben Krull, during this James refers to him as Clark, Winn then figures out he is referring to Clark Kent and that he is Superman.
 * 7) Alex Danvers: Alex has been aware of Clark's identity as Superman for years.
 * 8) D.E.O.: While unconfirmed it's possible that most members of the D.E.O. are aware of Clark's identity as Superman.
 * 9) Barry Allen: Kara seems to have told Barry about Clark, who is mentioned to be "more famous".
 * 10) Lyra Strayd: Lyra was right next to James when he was talking about Clark to Winn.

Kara Zor-El/Kara Danvers/Supergirl

 * 1) Clark Kent: After CatCo Worldwide Media announced that Flight 237 was saved by Supergirl, Clark quickly figured out that Kara is Supergirl.
 * 2) Alex Danvers: After Kara saved Flight 237, Alex quickly figured out that Kara is Supergirl.
 * 3) Winn Schott: After Kara showed her powers to Winn, she revealed her identity as Supergirl to him.
 * 4) J'onn J'onzz: J'onn was already aware that Kara is a Kryptonian, he learned this from her adoptive father Jeremiah, after CatCo Worldwide Media announced that Flight 237 was saved by Supergirl, J'onn quickly figured out that Kara is Supergirl.
 * 5) James Olsen: James was already aware that Kara is a Kryptonian, he learned this from her cousin Clark Kent, after CatCo Worldwide Media announced that Flight 237 was saved by Supergirl, James quickly figured out that Kara is Supergirl.
 * 6) Astra: After CatCo Worldwide Media announced that Flight 237 was saved by Supergirl, Astra quickly figured out that Kara is Supergirl, it is unknown how she discovered Kara's civilian identity.
 * 7) Non: After CatCo Worldwide Media announced that Flight 237 was saved by Supergirl, Non quickly figured out that Kara is Supergirl, it is unknown how he discovered Kara's civilian identity.
 * 8) Eliza Danvers: After CatCo Worldwide Media announced that Flight 237 was saved by Supergirl, Eliza quickly figured out that Kara is Supergirl.
 * 9) Maxwell Lord: At dinner with Alex Danvers, Maxwell planted a tiny camera on her purse and through it, discovered Kara's civilian identity.
 * 10) Lucy Lane: Kara and James revealed the former's identity as Supergirl to Lucy out of desperation to save J'onn and Alex from Project Cadmus.
 * 11) D.E.O.: Most of the members of the D.E.O. are aware of Kara's civilian identity since she joined.
 * 12) Barry Allen: Barry saved Kara from falling off the CatCo. building. Kara then revealed her superhero identity to Barry.
 * 13) Mon-El: Mon-El is aware of Kara's identity as Supergirl.
 * 14) Jeremiah Danvers: Jeremiah is aware of Kara's identity as Supergirl.
 * 15) Cisco Ramon: Barry introduced Kara to Cisco.
 * 16) Oliver Queen: Barry introduced Kara to Oliver when she met the team.
 * 17) Thea Queen: Barry introduced Kara to Thea when she met the team.
 * 18) John Diggle: Barry introduced Kara to John when she met the team.
 * 19) Jefferson Jackson: Barry introduced Kara to Jax when she met the team.
 * 20) Martin Stein: Barry introduced Kara to Martin when she met the team.
 * 21) Mick Rory: Barry introduced Kara to Mick when she met the team.
 * 22) Sara Lance: Barry introduced Kara to Sara when she met the team.
 * 23) Felicity Smoak: Barry introduced Kara to Felicity when she met the team.
 * 24) Iris West: Barry introduced Kara to Iris when she met the team.
 * 25) Caitlin Snow: Barry introduced Kara to Caitlin when she met the team.
 * 26) H.R. Wells: Barry introduced Kara to H.R. when she met the team.
 * 27) Amaya Jiwe: Amaya is aware of Kara's identity as Supergirl.
 * 28) Nate Heywood: Nate is aware of Kara's identity as Supergirl.
 * 29) Curtis Holt: Curtis is aware of Kara's identity as Supergirl.
 * 30) Rene Ramirez: Rene is aware of Kara's identity as Supergirl.
 * 31) Rory Regan: Rory is aware of Kara's identity as Supergirl.
 * 32) Susan Brayden: Susan is aware of Kara's identity as Supergirl.
 * 33) Maggie Sawyer: Maggie figured her out Kara's identity as Supergirl, and confirmed it with Alex.
 * 34) Mxyzptlk: Mxyzptlk is already aware of Kara's identity as Supergirl.
 * 35) Music Meister: Music Meister is already aware of Kara's identity as Supergirl.
 * 36) Joe West: After Kara was whammied by Music Meister, she was brought to S.T.A.R. Labs on Earth One by Mon-El and J'onn J'onzz hoping that Team Flash could help her; as Joe saw Kara in her Supergirl suit.
 * 37) Wally West After Kara was whammied by Music Meister, she was brought to S.T.A.R. Labs on Earth One by Mon-El and J'onn J'onzz hoping that Team Flash could help her; as Wally saw Kara in her Supergirl suit.
 * 38) Rick Malverne: Rick witnessed Kara using her powers as a child, years later, after Kara saved Flight 237, Rick quickly figured out that Kara is Supergirl. However, his mind was later scheduled to be wiped so that he'd forget this information.
 * 39) Rhea: Mon-El informed Rhea of Kara's kryptonian name and identity as Supergirl. However, after Rhea saw her human name on Lena's cell phone, when she answered it and heard her voice; Rhea is now aware of Kara's civilian identity.
 * 40) Lillian Luthor: Lillian is aware of Kara's identity as Supergirl.
 * 41) Cat Grant: Cat is aware of Kara's identity of Supergirl, but continues to act like she's unaware of front of her.

J'onn J'onzz/Hank Henshaw/Martian Manhunter

 * 1) Alex Danvers: After J'onn saved Alex from Jemm, he revealed to her that he is not Hank Henshaw, as the real Hank had be dead for 10 years, and he revealed his true form to Alex.
 * 2) Kara Danvers: J'onn revealed his true identity to Kara (off-screen).
 * 3) Winn Schott: J'onn revealed his true identity to Winn (off-screen).
 * 4) James Olsen: J'onn revealed his true identity to James (off-screen).
 * 5) D.E.O.: When Kara (under the influence of Red Kryptonite) was about to kill Alex, J'onn was forced to reveal true form in front of all D.E.O., agents present.
 * 6) Jim Harper: After the Red Kryptnonite incident, Jim Harper is notified of J'onn's identity.
 * 7) Lucy Lane: After returning to the army, Lucy is made aware of J'onn's identity during the Red Kryptonite incident.
 * 8) Maxwell Lord: Max is made aware of J'onn's identity during the Red Kryptonite incident.
 * 9) Clark Kent: Clark has been aware of J'onn's identity as Martian Manhunter for years.
 * 10) Eliza Danvers: J'onn revealed his true identity to Eliza.
 * 11) Olivia Marsdin: Olivia is made aware of J'onn's identity when he fought a red-kryptonite infected Supergirl that revealed him to the rest of the world.
 * 12) Mon-El: Mon-El is told by Kara about J'onn's identity as a Green Martian.
 * 13) M'gann M'orzz: M'gann met J'onn in his own form when he visited the Alien Bar.
 * 14) Lillian Luthor: Lillian is aware of J'onn's identity as the Martian Manhunter.
 * 15) Lena Luthor: Lena is aware of J'onn's identity as the Martian Manhunter.
 * 16) Hank Henshaw: Hank is aware of J'onn's identity as the Martian Manhunter, and his assuming his own identity.
 * 17) Barry Allen: Barry first meets J'onn when he and Mon-El bring a comatose Kara to their Earth.
 * 18) Caitlin Snow: Caitlin first meets J'onn when he and Mon-El bring a comatose Kara to their Earth.
 * 19) Cisco Ramon: Cisco first meets J'onn when he and Mon-El bring a comatose Kara to their Earth.
 * 20) H.R. Wells: H.R. first meets J'onn when he and Mon-El bring a comatose Kara to their Earth.
 * 21) Iris West: Iris first meets J'onn when he and Mon-El bring a comatose Kara to their Earth.
 * 22) Wally West: Wally first meets J'onn when he and Mon-El bring a comatose Kara to their Earth.
 * 23) Joe West: Joe first meets J'onn when he and Mon-El bring a comatose Kara to their Earth.

James Olsen/Guardian

 * 1) Winn Schott: James told Winn about wanting to become a vigilante and convinced him to create a suit for him.
 * 2) Alex Danvers: Alex forced Winn to tell her who Guardian is.
 * 3) Kara Danvers: Kara found out James identity as Guardian when she removed his helmet; as she does not openly support James' vigilantism.
 * 4) Mon-El: Mon-El found out along with Kara, who Guardian is.
 * 5) J'onn J'onzz:
 * 6) Lyra Strayd: Lyra figured out that James is Guardian using her super smell, realizing they smelled the same.
 * 7) Lillian Luthor: Lillian saw James unmasked in his Guardian suit.
 * 8) Cat Grant: Cat was able to figure out that James is Guardian by his eyes.

Barry Allen/Savitar

 * 1) Caitlin Snow: Savitar revealed his identity to Caitlin to gain her trust.
 * 2) Barry Allen (Present): Barry deduced the identity of Savitar to be his future time remnant given that Savitar has knowledge on events Barry witnessed and will witness.
 * 3) Iris West: After Barry found out, he informed Iris of Savitar's identity (off-screen).
 * 4) Joe West: After Barry found out, he informed Joe of Savitar's identity (off-screen).
 * 5) Wally West: After Barry found out, he informed Wally of Savitar's identity (off-screen).
 * 6) Cisco Ramon: After Barry found out, he informed Cisco of Savitar's identity (off-screen).
 * 7) Julian Albert: After Barry found out, he informed Julian of Savitar's identity (off-screen).
 * 8) H.R. Wells: After Barry found out, he informed H.R. of Savitar's identity (off-screen).
 * 9) Tracy Brand: Tracy was informed of Savitar's identity (off-screen).
 * 10) Harry Wells: Harry was informed of Savitar's identity (off-screen).

Caitlin Snow/Killer Frost

 * 1) Cisco Ramon: Cisco saw Caitlin in her Killer Frost persona.
 * 2) Julian Albert: Julian saw Caitlin in her Killer Frost persona.
 * 3) H.R. Wells: H.R. saw Caitlin in her Killer Frost persona.
 * 4) Barry Allen: Barry saw Caitlin in her Killer Frost persona.
 * 5) Iris West: Iris was informed of Caitlin's transformation into Killer Frost (off-screen).
 * 6) Joe West: Joe was informed of Caitlin's transformation into Killer Frost (off-screen).
 * 7) Barry Allen (Savitar): Savitar knows Caitlin is Killer Frost; due to the fact that he is the present Barry's future time remnant.
 * 8) Tracy Brand: Tracy saw Caitlin in her Killer Frost persona, it is unknown if she was informed of Caitlin's civilian identity.
 * 9) Cecile Horton: Cecile saw Caitlin in her Killer Frost persona, it is unknown if she was informed of Caitlin's civilian identity.

Olivia Marsdin

 * 1) Kara Danvers: Kara saw Olivia in her true form.
 * 2) Cat Grant: Cat saw Olivia in her true form.
 * 3) Winn Schott: Winn saw Olivia in her true form.
 * 4) Alex Danvers: Alex saw Olivia in her true form.

Cisco Ramon/Vibe

 * 1) Eobard Thawne: Eobard knows that Cisco was infected by S.T.A.R. Labs particle accelerator explosion; even before the latter discovered that he is a meta-human himself.
 * 2) Martin Stein: Cisco informed Martin that he is a meta-human.
 * 3) Harry Wells: Harry was able to figure out that Cisco is a meta-human himself; via his Next gen watch.
 * 4) Barry Allen: Harry revealed to Barry that Cisco is a meta-human.
 * 5) Hunter Zolomon: Harry revealed to Hunter that Cisco is a meta-human.
 * 6) Caitlin Snow: Harry revealed to Caitlin that Cisco is a meta-human.
 * 7) Joe West: Joe was informed of Cisco being a meta-human (off-screen).
 * 8) Iris West: Iris was informed of Cisco being a meta-human (off-screen).
 * 9) Kendra Saunders: Cisco informed Kendra that he is a meta-human.
 * 10) Oliver Queen: Cisco informed Oliver that he is a meta-human.
 * 11) John Diggle: Cisco informed John that he is a meta-human.
 * 12) Thea Queen: Cisco informed Thea that he is a meta-human.
 * 13) Felicity Smoak: Cisco informed Felicity that he is a meta-human.
 * 14) Malcolm Merlyn: Malcolm overheard Cisco revealing that he is a meta-human to most members of Team Arrow; that were present in the Arrowcave at the time.
 * 15) League of Assassins: Most of the members of the League of Assassins, overheard Cisco revealing that he is a meta-human to most members of Team Arrow; that were present in the Arrowcave at the time.
 * 16) Francisco Ramon: Francisco Ramon knows that Earth One Cisco is is a meta-human; after the two doppelgängers came face-to-face with each other, Cisco told Francisco that his codename is Vibe..
 * 17) Ronnie Raymond (Earth Two): Francisco informed Earth Two Ronnie of Earth One Cisco being a meta-human (off-screen).
 * 18) Martin Stein (Earth Two): Due to the fact that he can see and hear everything that Earth Two Ronnie can see and hear when the two of them were merged into Deathstorm; Earth Two Martin learned that Earth One Cisco is a meta-human; as Francisco informed Ronnie of the latter being a meta-human (off-screen).
 * 19) Caitlin Snow (Earth Two): Francisco informed Earth Two Caitlin of Earth One Cisco being a meta-human (off-screen).
 * 20) Dante Ramon: Cisco informed Dante of him being a meta-human.
 * 21) Dante Ramon (Earth Two): Hunter informed Earth Two Dante of Cisco's identity as Vibe (off-screen).
 * 22) Henry Allen: Henry knows that Cisco is Vibe.
 * 23) Wally West: Wally was informed of Cisco's identity as Vibe (off-screen).
 * 24) Jesse Quick: Jesse was informed of Cisco's identity as Vibe (off-screen).
 * 25) H.R. Wells: H.R. became aware of Cisco's identity as Vibe; after he joined Team Flash.
 * 26) Kara Danvers: After Kara was recruited to fight against the Dominators on Earth One, Barry informed her of Cisco's identity as Vibe (off-screen).
 * 27) Curtis Holt: Curtis knows that Cisco is Vibe.
 * 28) Rene Ramirez: Rene knows that Cisco is Vibe.
 * 29) Rory Regan: Rory knows that Cisco is Vibe.
 * 30) Jefferson Jackson: Jax knows that Cisco is Vibe.
 * 31) Sara Lance: Sara knows that Cisco is Vibe.
 * 32) Ray Palmer: Ray knows that Cisco is Vibe.
 * 33) Nate Heywood: Nate knows that Cisco is Vibe.
 * 34) Mick Rory: Mick knows that Cisco is Vibe.
 * 35) Amaya Jiwe: Amaya knows that Cisco is Vibe.
 * 36) Gypsy: Gypsy saw Cisco use one of his vibrational blasts against her; after she attacked H.R..
 * 37) Julian Albert: Julian became aware of Cisco's identity as Vibe; after he joined Team Flash.
 * 38) Mon-El: Mon-El saw Cisco in his Vibe suit.
 * 39) J'onn J'onzz: J'onn saw Cisco in his Vibe suit.
 * 40) Barry Allen (Savitar): Savitar knows that Cisco is Vibe; due to the fact that he is the present Barry's future time remnant.

Mari McCabe/Vixen

 * 1) Barry Allen:
 * 2) Team Arrow:
 * 3) Samantha Clayton:
 * 4) Amaya Jiwe:
 * 5) Ray Palmer:
 * 6) Nate Heywood:

Carter Hall/Hawkman

 * 1) Vandal Savage: Vandal knows that Carter is Hawkman; due to the fact that he is one of Khufu's reincarnations.
 * 2) Kendra Saunders: Kendra saw Carter unmasked in his Hawkman suit.
 * 3) Barry Allen: Barry saw Carter unmasked in his Hawkman suit while he was chained in the Arrowcave.
 * 4) Cisco Ramon: Cisco saw Carter unmasked in his Hawkman suit while he was chained in the Arrowcave.
 * 5) Caitlin Snow: Caitlin was informed of Carter's identity as Hawkman (off-screen).
 * 6) Oliver Queen: Oliver saw Carter unmasked in his Hawkman suit while he was chained in the Arrowcave.
 * 7) John Diggle: John saw Carter unmasked in his Hawkman suit while he was chained in the Arrowcave.
 * 8) Felicity Smoak: Felicity saw Carter unmasked in his Hawkman suit while he was chained in the Arrowcave.
 * 9) Thea Queen: Thea saw Carter unmasked in his Hawkman suit while he was chained in the Arrowcave.
 * 10) Laurel Lance: Laurel was informed of Carter's identity as Hawkman (off-screen).
 * 11) Malcolm Merlyn: Malcolm saw Carter unmasked in his Hawkman suit while he was chained in the Arrowcave.
 * 12) League of Assassins: Most of the members of the League of Assassins saw Carter unmasked in his Hawkman suit while he was chained in the Arrowcave.
 * 13) Rip Hunter: Being a former Time Master, Rip knows that Carter is Hawkman.
 * 14) Ray Palmer: Ray became aware of Carter's identity as Hawkman; after he joined the Legends.
 * 15) Sara Lance: Sara became aware of Carter's identity as Hawkman; after she joined the Legends.
 * 16) Jefferson Jackson: Jax became aware of Carter's identity as Hawkman; after he joined the Legends.
 * 17) Martin Stein: Martin became aware of Carter's identity as Hawkman; after he joined the Legends.
 * 18) Leonard Snart: Leonard became aware of Carter's identity as Hawkman; after he joined the Legends.
 * 19) Mick Rory: Mick became aware of Carter's identity as Hawkman; after he joined the Legends.

Kendra Saunders/Hawkgirl

 * 1) Vandal Savage: Vandal knows that Kendra is Hawkgirl; due to the fact that she is one of Chay-Ara's reincarnations.
 * 2) Carter Hall: Carter knows that Kendra is Hawkgirl, due to the fact that she is one of Chay-Ara's reincarnations; as they are drawn to each other in each new life.
 * 3) Barry Allen: Carter informed Barry of Kendra's identity as Hawkgirl.
 * 4) Cisco Ramon: Cisco accidentally vibed and saw Kendra in her Hawkgirl suit.
 * 5) Caitlin Snow: Caitlin was informed of Kendra's identity as Hawkgirl (off-screen).
 * 6) Oliver Queen: Carter informed Oliver of Kendra's identity as Hawkgirl.
 * 7) John Diggle: Carter informed John of Kendra's identity as Hawkgirl.
 * 8) Felicity Smoak: Carter informed Felicity of Kendra's identity as Hawkgirl.
 * 9) Thea Queen: Carter informed Thea of Kendra's identity as Hawkgirl.
 * 10) Laurel Lance: Laurel was informed of Kendra's identity as Hawkgirl (off-screen).
 * 11) Malcolm Merlyn: Malcolm overheard Caitlin revealing Kendra's identity as Hawkgirl to most members of Team Arrow; that were present in the Arrowcave at the time.
 * 12) League of Assassins: Most of the members of the League of Assassins, overheard Carter revealing Kendra's identity as Hawkgirl to most members of Team Arrow; that were present in the Arrowcave at the time.
 * 13) Rip Hunter: Being a former Time Master, Rip knows that Kendra is Hawkgirl.
 * 14) Ray Palmer: Ray became aware of Kendra's identity as Hawkgirl; after he joined the Legends.
 * 15) Sara Lance: Sara became aware of Kendra's identity as Hawkgirl; after she joined the Legends.
 * 16) Jefferson Jackson: Jax became aware of Kendra's identity as Hawkgirl; after he joined the Legends.
 * 17) Martin Stein: Martin became aware of Kendra's identity as Hawkgirl; after he joined the Legends.
 * 18) Leonard Snart: Leonard became aware of Kendra's identity as Hawkgirl; after he joined the Legends.
 * 19) Mick Rory: Mick became aware of Kendra's identity as Hawkgirl; after he joined the Legends.
 * 20) Scythian Torvil: After his memories of all his previous incarnations awoken; Scythian now knows that Kendra is Hawkgirl.

Dinah Drake
Although Oliver chose Dinah as Laurel's successor; for unknown reasons, she has not taken on the mantle of Black Canary.
 * 1) Team Arrow:

Felicity Smoak/Overwatch

 * 1) Oliver Queen: Oliver is aware of Felicity's identity as Overwatch.
 * 2) John Diggle: John is aware of Felicity's identity as Overwatch.
 * 3) Laurel Lance: Laurel is aware of Felicity's identity as Overwatch.
 * 4) Thea Queen: Thea is aware of Felicity's identity as Overwatch.
 * 5) Roy Harper: After returning to Star City, Roy is aware of Felicity's identity as Overwatch.
 * 6) Noah Kuttler: Noah was able to figure out that Felicity is Overwatch; due to the fact that her intellect and computer hacker skills are almost equal to his.
 * 7) Quentin Lance: Quentin is aware of Felicity's identity as Overwatch.
 * 8) Curtis Holt: Curtis is aware of Felicity's identity as Overwatch.
 * 9) Lyla Michaels: Lyla knows that Felicity is Overwatch.
 * 10) Rene Ramirez: Rene became aware of Felicity's identity as Overwatch; after he joined Team Arrow.
 * 11) Evelyn Sharp: Evelyn became aware of Felicity's identity as Overwatch; after she joined Team Arrow.
 * 12) Rory Regan: Rory became aware of Felicity's identity as Overwatch; after he joined Team Arrow.
 * 13) Dinah Drake: Dinah became aware of Felicity's identity as Overwatch; after she joined Team Arrow.
 * 14) Barry Allen: Barry is aware of Felicity's identity as Overwatch.
 * 15) Caitlin Snow: Caitlin is aware of Felicity's identity as Overwatch.
 * 16) Cisco Ramon: Cisco is aware of Felicity's identity as Overwatch.
 * 17) Joe West: Joe is aware of Felicity's identity as Overwatch.
 * 18) Iris West: Iris is aware of Felicity's identity as Overwatch.
 * 19) Wally West: Wally is aware of Felicity's identity as Overwatch.
 * 20) H.R. Wells: H.R. became aware of Felicity's identity as Overwatch; after he joined Team Flash.
 * 21) Sara Lance: Sara Lance knows that Felicity is Overwatch.
 * 22) Ray Palmer: Ray knows that Felicity is Overwatch.
 * 23) Jefferson Jackson: Jax knows that Felicity is Overwatch.
 * 24) Martin Stein: Martin knows that Felicity is Overwatch.
 * 25) Nate Heywood: Nate knows that Felicity is Overwatch.
 * 26) Mick Rory: Mick knows that Felicity is Overwatch.
 * 27) Amaya Jiwe: Amaya knows that Felicity is Overwatch.
 * 28) Kara Danvers: After Kara was recruited to fight against the Dominators on Earth One, Barry informed her of Felicity's identity as Overwatch (off-screen).