- as Kara Zor-El / Kara Danvers / Supergirl
- as Maxwell Lord
- as James Olsen
- as Alura Zor-El / Astra
- as Lucy Lane
- as Alex Danvers
- as Winslow "Winn" Schott, Jr.
- as Non
- as Hank Henshaw / Martian Manhunter
- as Dirk Armstrong
- as Cat Grant
- as Young Kara Zor-El
- as Commander Gor
- as Attorney
- as Lawyer #2
- as News Anchor #1
- as Board Member #1
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Watch "Supergirl > Hostile Takeover":