Barry Allen is a normal man who applies for a job at CCPD he sees a spaceship crash inside the spaceship is a woman who apparently is a alien she introduces himself as Kara Zor-El with her own alter ego Supergirl They fall in love and team up to take down a criminal mastermind with Cold gun known as Captain Cold.
Barry Allen is a 23 year old man who works for the CCPD
- Grant Gustin as Barry Allen/The Flash: A Forensic Scientist who got struck by lightning a ended a in a coma for 9 months and took on the superhero mantle known as The Flash he is the son of Henry and Nora Allen and teams up with Supergirl to take a sinister criminal Leonard Snart aka Captain Cold.
- Melissa Benoist as Kara Zor-El/Supergirl: A kryptonian woman who crash landed on earth and the first human she meets on earth is none other than Barry Allen she is Barry's Love Interest and Ally she sees dreams on her home Kryton being destroyed but Barry brings her back into the light and becomes Supergirl.
- Zac Efron as Leonard Snart/Captain Cold: A criminal mastermind who's father trained him to be a cold hearted man to kill anyone who threatens him. He is the leader of the criminal organisation the rogues he also imbued with the power of Cryokinesis giving ice powers that can cause snow storms across Central City. Abrams quoted Zac putted off a perfect great villian in Captain Cold the fact that Leonard Snart has no sense of love and passion which he got from his father.
- Jon Hamm as Henry Allen:
- Julianna Moore as Nora Allen:
- Harrison Ford as Jay Garrick:
- Ben Stiler as Detective Fred Chyre:
- Ben Barnes as Digger Harkness/Captain Boomerang:
- Dexter Darden as Wally West:
- Edward Holcroft as Sam Scudder/Mirror Master: