Säsongens återkommande skådespelare 10

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. 

   Azie Tesfai

   Kelly Olsen / Guardian

8. 

   Julie Gonzalo

   Andrea Rojas / Acrata

9. 

   Staz Nair

   William Dey

10. 

    Andrea Brooks

    Eve Tessmacher / Hope

Gästskådespelare 14

1. 

   Mehcad Brooks

   James 'Jimmy' Olsen / Guardian

2. 

   Jalen Thomas Brooks

   Simon Kirby

3. 

   Patricia Isaac

   Agent Igle

4. 

   Paul Jarrett

   Nelson Stewart

5. 

   Phil LaMarr

   Malefic J'onzz

6. 

   Luisa d'Oliveira

   Elena Torres / Breathtaker

7. Jerry Bannister

   Construction Worker

8. 

   Ryan Hesp

   Agent Sloan

9. Lorenzo de La Rosa

   Male Jogger

10. Larry MacDonald

    Strange Man

11. Kristi McMullan

    Female Jogger

12. 

    Chris Nowland

    Grocer

13. Camille Posadas

    Obsidian Woman

14. 

    Michel Issa Rubio

    Doorman

Medarbetare 4