|Season 1 • 2 • 3 • 4 • 5 • 6|
was renewed for a sixth and final season by The CW on January 7, 2020. Due to the COVID-19 pandemic, the CW announced on May 14, 2020 that their regular season would start in January 2021 rather than October 2020 as usual. Along with this, they announced that Supergirl would return midseason. On September 22, 2020, it was announced that this would be the final season. It premiered on March 30, 2021.
|SUPERGIRL is an action-adventure drama based on the DC character Kara Zor-El. Twelve-year-old Kara escaped the doomed planet Krypton and was sent to Earth where she was raised by a foster family. Kara grew up in the shadow of her foster sister, Alex, and learned to conceal the phenomenal powers she shares with her famous cousin, Superman, in order to keep her identity a secret. Years later, Kara was living in National City and still concealing her powers, when a plane crash threatened Alex's life and Kara took to the sky to save her. Now, Kara balances her work as a reporter for CatCo Worldwide Media with her work as Supergirl, keeping National City and the Earth safe from sinister threats. She's joined in this pursuit of justice by her sister, Alex, her mentor, Martian Manhunter and her friends Brainiac-5, Dreamer and Lena Luthor. As Kara struggles to navigate her relationships and her life as a reporter, her heart soars as she takes to the skies as Supergirl!|
- Melissa Benoist as Kara Danvers/Supergirl
- Chyler Leigh as Dr. Alex Danvers/Sentinel
- Katie McGrath as Lena Luthor and Elizabeth Walsh
- Jesse Rath as Querl Dox/Brainiac 5
- Nicole Maines as Nia Nal/Dreamer
- Azie Tesfai as Dr. Kelly Olsen/Guardian
- Julie Gonzalo as Andrea Rojas/Acrata
- Staz Nair as William Dey
- Peta Sergeant as Nyxlygsptlnz
- David Harewood as J'onn J'onzz/Martian Manhunter
- Jon Cryer as Lex Luthor
- Brenda Strong as Dr. Lillian Luthor
- Sharon Leal as M'gann M'orzz/Miss Martian
- Robert Baker as Otis Graves
- Claude Knowlton as Silas White
- Jason Behr as Zor-El
- Matt Baram as Mitch
- Jhaleil Swaby as Orlando Davis
- Mila Jones as Esme
- Andrew Morgado as Totem Oracle (voice)
Confirmed plot points
- Mon-El, Winn Schott/Toyman, and James Olsen will return.
- Kara's experience in the Phantom Zone will continue to haunt her throughout the season.
- Kara and Lena's friendship will be "stronger than ever".
- The reason why Kara failed her Gauntlet in "" will be explored later this season.
|#||Name||Directed by||Story by||Teleplay by||Original airdate|
|1||""||Jesse Warn||Robert Rovner & Jessica Queller||Jay Faerber & Jess Kardos||March 30, 2021|
|As Brainiac lays close to death after trying to stop Lex, Supergirl and team soar in to save him, engaging in an epic battle with Gamemnae. After beating Leviathan, Supergirl turns her attention to Lex who has used the Obsidian platform to brainwash half the world to love him and follow him at all costs, no matter what horrible things he does. Knowing how dangerous this makes her brother, Lena enlists the entire team – Alex, J'onn, Dreamer, Kelly and Brainiac – to help, but Supergirl realizes that the only way to truly stop Lex is to sacrifice herself.|
|2||""||Jesse Warn||Robert Rovner & Jessica Queller||Jay Faerber & Jess Kardos||April 6, 2021|
|As the stakes with Lex are raised higher than ever before, Lena must decide how far she is willing to go to stop her brother. Meanwhile, Supergirl and the team are faced with a challenge unlike anything they’ve ever dealt with before and it brings Alex to her breaking point.|
|3||""||Sudz Sutherland||Dana Horgan & Emilio Ortega Aldrich||April 13, 2021|
|Supergirl makes a new ally. Lena and Lex battle for control of Luthor Corp.|
|4||""||Alysse Leite-Rogers||Karen E. Maser & Nicki Holcomb||April 20, 2021|
|Supergirl finds an opportunity to escape from the Phantom Zone, but it comes with some dangerous strings attached. Meanwhile, Lena joins the Superfriends on a mission but finds she disagrees with their plan of action against the Phantoms and wonders if she is truly ready to be a part of the team.|
|5||""||Alexandra La Roche||Rob Wright & Jess Kardos||April 27, 2021|
|Nia and Brainy attempt to save Supergirl from the Phantom Zone by time traveling back to Kara's home in 2009. While determined to secure the item needed to help Supergirl, Brainy is worried about keeping a low profile so as not to alter the future timeline. However, when their ship crashes upon arrival, a young Kara Danvers is the first on the scene. Meanwhile, a young reporter named Cat Grant sets her sights on Midvale as she suspects there is a big story in the small town.|
|6||""||Chyler Leigh||Rob Wright & Jess Kardos||May 4, 2021|
|Part two of the flashback episodes pick up where things left off – Young Kara experiences kryptonite for the first time, Nia and Brainy are trapped by invading aliens, and a young Cat Grant may be the reason Supergirl never gets out of the Phantom Zone.|
|7||""||David Harewood||J. Holtham & Elle Lipson||May 11, 2021|
|As the Super Friends brave the Phantom Zone to bring Supergirl home, each member of the team is confronted by visions of their worst fear.|
|8||""||Armen V. Kevorkian||Dana Horgan & Jay Faerber||August 24, 2021|
|As Supergirl and Zor-El make their return to National City, they are determined to keep the Phantom Zone behind them and enjoy being superheroes together. Unfortunately, their overzealous efforts backfire, creating a whole new threat to National City.|
|9||""||Shannon Kohli||Karen E. Maser & Emilio Ortega Aldrich||August 31, 2021|
|Kelly meets Joey, a young orphaned alien boy, who is acting out in foster care because he fears there is something wrong with his brother Orlando, who is incarcerated. Kelly asks Kara to help her investigate and they stumble upon abuse at the prison. Meanwhile, Nyxly crashes one of Nia's dreams and asks her for help.|
|10||""||Jesse Warn||Jess Kardos||Nicki Holcomb & Jen Troy||September 7, 2021|
|Supergirl intervenes when a building in the Heights that was set aside for low income housing is suddenly at risk to be sold to a major corporation. Supergirl recruits Orlando to help her win over the city, but things go awry when Nyxly shows up. Meanwhile, Nia trains with her mother.|
|11||""||Glen Winter||Rob Wright||Elle Lipson & Chandler Smidt||September 14, 2021|
|Supergirl and team must stop Nyxly from vanquishing a familiar face from Supergirl's past – Mr. Mxyzptlk. Mxy returns and explains Nyxly's dark history to the super team in the best way he knows how – in song form. Meanwhile, Lena visits her mother's birthplace in Newfoundland, eager to dig into her past but is shocked by the small town's icy reception towards her.|
|12||""||David Ramsey||Azie Tesfai & J. Holtham||September 21, 2021|
|Kelly is horrified when the Ormfell building implodes, injuring many in the community, including Joey. However, her horror quickly turns to frustration when she realizes that the hospital is overwhelmed, people are getting sicker, and no one is coming to help – including Supergirl who is busy fighting Nyxly. Knowing that she can make a difference, Kelly embraces her power and fully steps into her role as Guardian. Joined by Supergirl, Alex, Diggle and team, Guardian leads the way to restoring justice to the fallen community.|
|13||""||Tawnia McKiernan||Dana Horgan||Jay Faerber & Brooke Pohl||September 28, 2021|
|Supergirl and team race Nyxly for control of a magical totem that controls courage. Supergirl and Nyxly battle and each get a piece of the totem but learn the first person to pass the test of courage will gain control of the entire thing. Meanwhile, Lena is still struggling to make sense of her newfound gift.|
|14||""||Simon Burnett||Karen E. Maser & Derek Simon||October 5, 2021|
|Lena is uncertain about using her magical abilities to help Supergirl retrieve the second totem from Nyxly. William struggles to write a story on the Super Friends that makes both the heroes and Andrea happy. Meanwhile, Kelly is thrilled Esme has found a new home, but things go awry and the little girl's future is put in danger.|
|15||""||Tawnia McKiernan||Robert Rovner||Emilio Ortega Aldrich & Nicki Holcomb||October 12, 2021|
|Supergirl continues to fight Nyxly for the remaining totems but after Nyxly kidnaps William, Supergirl realizes she needs to take a more proactive stance to keep National City safe. Meanwhile, Alex faces the biggest challenge of her life.|
|16||""||Eric Dean Seaton||Rob Wright & Jess Kardos||October 19, 2021|
|Kara lands her dream story for Catco but when the city is suddenly attacked by a nightmare monster at the same time as her interview, she is forced to take a serious look at her life and decide if she can continue to live as both Kara and Supergirl. As Dreamer takes the lead on the search for the Dream Totem, which can vanquish the nightmare monster in National City, she realizes she needs to ask her sister Maeve for help. Old wounds resurface as the two sisters come face to face.|
|17||""||Jesse Warn||Dana Horgan & Nicki Holcomb||October 26, 2021|
|When Lex Luthor appears by Nyxly's side, Supergirl and team must deal with the emotional fallout of facing their two biggest foes at the same time. Alex makes plans for the perfect proposal to Kelly, but work keeps getting in the way.|
|18||""||David McWhirter||Karen E. Maser||Emilio Ortega Aldrich & Elle Lipson||November 2, 2021|
|Supergirl is determined to keep everyone safe from Lex and Nyxly so she doubles down on patrol, especially as Alex and Kelly's bachelorette party is coming up. Alex is torn between duty and finally allowing herself the time to enjoy her new family. Brainy receives heartbreaking news, and William clashes with Andrea over her recent coverage of Lex.|
|19||""||Glen Winter||J. Holtham||Derek Simon & Jay Faerber||November 9, 2021|
|In the penultimate buildup to the season finale, Supergirl and the super friends take drastic action after a loved one is kidnapped by Nyxly and Lex. An unlikely ally steps in to help the team.|
|20||""||Jesse Warn||Robert Rovner & Jessica Queller||Rob Wright & Derek Simon||November 9, 2021|
|In the epic series finale, Supergirl is joined by familiar faces from the past to help her stop Lex and Nyxly for good. Meanwhile, Alex and Kelly prepare to walk down the aisle.|
- This season was rumored to begin filming mid-April 2020 to accommodate Melissa Benoist's pregnancy, but this plan was rendered obsolete once the COVID-19 shutdowns forced delays on all television productions. Filming resumed, tentatively, in September 2020 alongside the other Arrowverse shows.
- Melissa stated in an interview that her maternity leave wouldn't be over until January 2021.
- However, before production could even begin, Supergirl had to shut down on September 30, 2020 due to delays in processing COVID-19 tests in British Columbia. Luckily, the stoppage was temporary.
- On October 7, 2020, production was allowed to resume.
- Production wrapped on August 6, 2021.
- This season marks the directorial debut of Chyler Leigh.
- This season is the first and only season to feature new series regular Peta Sergeant (Nyxlygsptlnz), who's credited from "" onwards.
- This season is also the first season to:
|"" • "" • "" • "" • "" • "" • "" • "" • "" • "" • "" • "" • "" • "" • "" • ""|
|"" • "" • "" • ""|