Stała obsada sezonu 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

Goście specjalni 7

1. 

   Judith Maxie

   Theresa Merkel

2. 

   Phil LaMarr

   Rag Doll (voice)

3. 

   Troy James

   Peter Merkel / Rag Doll

4. Patrick Dodd

   Jerry Winehouse

5. 

   Carlo Marks

   William Seaver

6. 

   Ashley Ross

   Natalie

7. 

   Kyle Secor

   Thomas Snow / Icicle

Ekipa 4