Pravidelné obsazení sezóny 7

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. 

   Floriana Lima

   Maggie Sawyer

5. 

   Chris Wood

   Mon-El

6. 

   Jeremy Jordan

   Winn Schott

7. 

   Mehcad Brooks

   James 'Jimmy' Olsen / Guardian

Hostující obsazení epizody 12

1. 

   Calista Flockhart

   Cat Grant

2. 

   Frederick Schmidt

   John Corben / Metallo

3. 

   Rich Ting

   Dr. Gilcrist / Metallo 2

4. 

   Ian Gomez

   Snapper Carr

5. 

   Tyler Hoechlin

   Clark Kent / Superman

6. 

   Dawn Chubai

   TV Anchor #1

7. 

   Marshall Bingham

   Robber

8. Leif Havdale

   Driver at Robbery

9. 

   Paul Lazenby

   Lead Fireman

10. 

    Sachin Sahel

    McGill

11. Ava Wilson

    Little Girl in the Park

12. 

    Brenda Strong

    Lillian Luthor

Štáb 3