- Grant Gustin as The Flash/Barry Allen
- Melissa Benoist as Patty Spivot
- Anna Kendrick as Iris West
- Oscar Isaac as Manuel Lago
- James Nesbitt as Dr Darwin Elias
- Forrest Whitaker as James Forrest
- Edgar Ramirez as David Singh
- Jason Clarke as Captain Cold/Leonard Snart
- Gael Garcia Bernal as Weather Wizard/Marco Mardon
- Bruce Willis as Heatwave/Dylan Cruise
- David Tennant as Mirror Master/Samuel Scudder
- Neil Patrick Harris as Pied Piper/Hartley Rathaway
- Jennifer Connely as Nora Allen
- Aaron Eckhart as Henry Allen
During the opening credits, a young Barry Allen comes home from school to find his mother brutally murdered. His father is sent to prison for the crime. Years later, Barry is now a forensic scientist for the Central City Police Department. One night as he prepares to leave work, a lightning bolt strikes and destroys a case of chemical and spills them all over Barry. As a result, Barry learns he now has super speed. Barry decides to use his powers to help humanity. He designs the costume and names himself The Flash.
More to be added...