- as Kara Zor-El / Kara Danvers / Supergirl
- as Maxwell Lord
- as James Olsen
- as Alura Zor-El / Astra
- as Alex Danvers
- as Non
- as Agent Hartmann
- as Winslow "Winn" Schott, Jr.
- as Hank Henshaw / Martian Manhunter
- as Hellgrammite
- as Cat Grant
- as Commander Gor
- as Young Kara Zor-El
- as Male Newscaster
- as Doctor
- as Fire Chief
- as Thug
- as Guard #2
- as Ricardo
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