시즌 정규 출연진 9

1. 

   Grant Gustin

   Barry Allen / The Flash

2. 

   Candice Patton

   Iris West-Allen

3. 

   Danielle Panabaker

   Dr. Caitlin Snow / Killer Frost

4. 

   Danielle Nicolet

   Cecile Horton

5. 

   Carlos Valdes

   Cisco Ramon / Vibe

6. 

   Hartley Sawyer

   Ralph Dibny / Elongated Man

7. 

   Jesse L. Martin

   Joe West

8. 

   Jessica Parker Kennedy

   Nora West-Allen / XS

9. 

   Tom Cavanagh

   Harrison 'Sherloque' Wells

특별출연 7

1. 

   Sarah Carter

   Grace Gibbons / Cicada II

2. 

   Everick Golding

   Trevor Shinick

3. 

   Islie Hirvonen

   Grace Gibbons

4. 

   Bruce Crawford

   JP Chipera

5. 

   Kyle Secor

   Thomas Snow / Icicle

6. 

   Susan Walters

   Dr. Carla Tannhauser

7. 

   Morena Baccarin

   Gideon (voice) (uncredited)

제작진 4