시즌 정규 출연진 8

1. 

   Grant Gustin

   Barry Allen / The Flash

2. 

   Candice Patton

   Iris West-Allen

3. 

   Danielle Panabaker

   Dr. Caitlin Snow / Frost

4. 

   Danielle Nicolet

   Cecile Horton

5. 

   Carlos Valdes

   Cisco Ramon

6. 

   Hartley Sawyer

   Ralph Dibny / Elongated Man

7. 

   Jesse L. Martin

   Joe West

8. 

   Tom Cavanagh

   Harrison 'Nash' Wells

특별출연 5

1. 

   Kayla Compton

   Allegra Garcia

2. 

   Sendhil Ramamurthy

   Dr. Ramsey Rosso / Bloodwork

3. 

   Victoria Park

   Kamilla Hwang

4. Emmett Lee Stang

   Mystery Man

5. 

   Michelle Harrison

   Speed Force Nora

제작진 3