시즌 정규 출연진 8

1. 

   Melissa Benoist

   Kara Danvers / Supergirl / Kara Zor-El

2. 

   Chyler Leigh

   Alex Danvers / Sentinel

3. 

   David Harewood

   J'onn J'onzz / Martian Manhunter

4. 

   Katie McGrath

   Lena Luthor

5. 

   Jesse Rath

   Querl 'Brainy' Dox / Brainiac-5

6. 

   Nicole Maines

   Nia Nal / Dreamer

7. 

   Sam Witwer

   Ben Lockwood / Agent Liberty

8. 

   Mehcad Brooks

   James 'Jimmy' Olsen / Guardian

특별출연 14

1. 

   Gabriel Gurevich

   Mikhail

2. 

   Candus Churchill

   Judge

3. Casey Dudley

   Bailiff

4. 

   Arran Henn

   Newscaster

5. 

   Rady Panov

   Class Clown

6. 

   Sasha Piltsin

   Kaznian Soldier

7. 

   Alex Vishniakoff

   Minister of Defense

8. 

   V.G. Winter

   Ansley Crew

9. 

   Tamiko Brownlee

   Bailiff

10. 

    Reese Alexander

    Warden

11. 

    Raphael Kepinski

    Kaznian General

12. 

    Andrea Brooks

    Eve Tessmacher

13. 

    Jon Cryer

    Lex Luthor

14. 

    Robert Baker

    Otis Graves

제작진 4