Elenco Principal da Temporada 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

Convidados Especiais 13

1. 

   Jeremy Davies

   John Deegan

2. 

   Melissa Benoist

   Kara Danvers / Supergirl

3. 

   Tyler Hoechlin

   Clark Kent / Superman

4. 

   Elizabeth Tulloch

   Lois Lane

5. 

   John Wesley Shipp

   Barry Allen / The Flash (Earth 90)

6. 

   LaMonica Garrett

   Mar Novu / The Monitor

7. 

   Paul Lazenby

   Tech Thief #2

8. Angela Vanderwal

   Heckler

9. 

   Ruby Rose

   Kate Kane / Batwoman

10. 

    Sean Kohnke

    Bratva Leader

11. 

    Klarc Jerome Wilson

    Officer Jones

12. 

    David Ramsey

    John Diggle / Spartan

13. 

    Stephen Amell

    Oliver Queen / Green Arrow

Equipa Técnica 5