Season 3 (The Flash)

On March 11, 2016, The Flash was renewed for a third season by The CW. It will take place in conjunction with season five of Arrow and season two of DC's Legends of Tomorrow.

Main cast

 * Grant Gustin as Barry Allen/The Flash
 * Candice Patton as Iris West
 * Danielle Panabaker as Dr. Caitlin Snow
 * Carlos Valdes as Cisco Ramon/Vibe
 * Keiynan Lonsdale as Wally West/Kid Flash
 * Tom Felton as Julian Dorn
 * Tom Cavanagh as TBA and Dr. Harrison "Harry" Wells
 * Jesse L. Martin as Detective Joe West

Recurring cast

 * John Wesley Shipp as Jay Garrick/The Flash and Henry Allen
 * Violett Beane as Jesse Quick
 * Todd Lasance as Savitar
 * Matt Letscher as Eobard Thawne/Reverse Flash
 * Michelle Harrison as Nora Allen
 * Tobin Bell as Doctor Alchemy (voice)
 * Emily Bett Rickards as Felicity Smoak
 * Susan Walters as Dr. Carla Tannhauser
 * Grey Damon as Sam Scudder/Mirror Master

Universe regulars

 * Wentworth Miller as Leonard Snart/Captain Cold
 * John Barrowman as Malcolm Merlyn/Dark Archer
 * Katie Cassidy

Synopsis
''"Until recently, 26 year-old Barry Allen (Grant Gustin) lived a normal life as a perpetually tardy C.S.I. in the Central City Police department. He was secretly in love with his best friend, Iris West (Candice Patton), daughter of Barry’s surrogate father, Detective Joe West (Jesse L. Martin). Joe adopted Barry fifteen years ago after Barry’s mother was murdered and Barry’s father, Henry Allen, received a life sentence for the crime – though Barry always maintained that a mysterious “Man in Yellow” was responsible. Then the S.T.A.R. Labs Particle Accelerator exploded, creating a dark matter lightning storm that struck Barry, bestowing him with superspeed and making him the fastest man alive. But Barry wasn’t the only person who was given extraordinary abilities that night. The dark matter also created meta-humans, many of whom have wreaked havoc with their powers on the city. With the help of his scientist friends at S.T.A.R Labs, Caitlin Snow (Danielle Panabaker), Cisco Ramon (Carlos Valdes), and Dr. Harrison Wells (Tom Cavanagh), Barry began a journey as The Flash to protect the people of Central City from these powerful new threats. With this team, Barry was finally able to defeat the Man in Yellow, aka The Reverse Flash, but in their epic battle, a Singularity was ripped in space and time that threatened to destroy them all.''

''After successfully closing the Singularity from destroying Central City, Barry thinks he’s seen the worst… but the arrival of Jay Garrick (Teddy Sears) reveals that the Singularity actually opened portals to an alternate Earth, known as Earth-2, which is being terrorized by a formidable evil speedster named Zoom. As Zoom sends an army of Earth-Two meta-humans to Earth-1 to defeat Barry, he receives unexpected assistance from the Earth-Two doppelganger of his former mentor, Harrison Wells. Meanwhile, Cisco discovers that he, too, was affected by the dark matter of the Particle Accelerator and must come to terms with his newfound powers. As Barry struggles to juggle life as a hero, he opens his heart to Patty Spivot (Shantel VanSanten), a spunky detective paired with Joe West, but realizes just how hard it is to find happiness when the lives of everyone you love are at stake. He finds some solace in the companionship of his father, Henry Allen, who was freed from a wrongful life sentence... but when Zoom kills Henry before Barry’s eyes, Barry’s newfound stability is shattered.''

''Blinded by anger, Barry unwittingly plays into Zoom’s game and uncovers the evil speedster’s true goal: to destroy all Earths in the multiverse. In the race of his life, Barry ultimately gets the upper hand against Zoom and defeats his nemesis. But unable to celebrate victory, Barry makes a world-shaking decision and speeds back in time to the night his mother died to stop Reverse Flash from killing her, irrevocably changing his past and redetermining his future."''

Confirmed plot points

 * There will be a four-way crossover between Supergirl, The Flash, Arrow and DC's Legends of Tomorrow in December 2016, and for The Flash, this will take place in episode eight.
 * Caitlin Snow's past will be revealed.
 * According to Carlos Valdes, this season will be way different.
 * Tom Cavanagh will return as a different character.
 * Cisco Ramon/Vibe will get a full costume.
 * Grant Gustin has hinted that the 'big bad' of the season may not be a meta-human, and has said that more speedsters are "inevitable".
 * Doctor Alchemy and Savitar will both be the big bads of the season.
 * Gustin has also said that Barry Allen will retain his sense of optimism, despite the losses he suffered during Season 2.
 * Kevin Smith will direct the seventh episode.
 * Kevin will start directing episode seven sometime in September.
 * Wally West will become Kid Flash this season.
 * An unnamed speedster dressed in black and orange will appear this season.
 * Harry and Jesse will return a little bit later in season three.
 * Henry and Nora are still alive in the new timeline.
 * Cisco is the richest man in America in the new timeline.
 * Felicity Smoak will return in episode 2.
 * In the new timeline, Cisco and Barry will still have their powers.
 * Grant Gustin has said not to expect Flashpoint to last too long but that it will have permanent effects.
 * Barry is the only one that knows all of the differences between the timelines. However, while he is the only one that knows, he does slowly start to forget the original timeline.

Confirmed new characters

 * Julian Dorn: Another CSI at the Central City Police Department who has suspicions about Barry Allen. He is also Barry's slightly older, slightly geekier contemporary, a guy who is as smart as he is intuitive. As such, this newcomer doesn't buy Barry’s nice guy routine and sets out to learn what he's hiding — all while concealing some secrets of his own.
 * Savitar: (an speedster dressed in black with orange highlights seen with Wally West/Kid Flash.
 * Doctor Alchemy:
 * Dr. Carla Tannhauser: Dr. Carla Tannhauser is a world class biomedical engineer and CEO of a major research company. But while Caitlin may have inherited her mother’s formidable scientific mind, the two have long had a difficult relationship, with Caitlin finding her mother cold and withholding, and Carla regarding her daughter as rebellious and ungrateful.
 * Top/Rosa Dillon: Female, late 20s, open ethnicity. There’s crazy and then there’s crazy… and then there’s Rosa. A wild-eyed whirlwind of a woman, this vexing, unpredictable, mentally unstable criminal has a history of violence and a nasty habit of turning people’s worlds upside down.
 * Francis: Female, 18 or older to play 17, open ethnicity, bright, a good kid, kicked around from foster home to foster home, Francis is now with an abusive foster father, John James, and his submissive wife, Karen. Sick and tired of being hurt, Francis has been having blackouts during which time she becomes her alter-ego, a meta human, who has superhuman strength and a desire for revenge.
 * Sam Scudder/Mirror Master: One of the Flash's most infamous Rogues, Sam Scudder -- aka Mirror Master -- is a smooth criminal with a huge ego. Upon discovering he now has the power to travel through any reflective surface, Scudder embarks on a massive crime spree to prove himself the greatest thief that Central City has ever seen.