- as James Olsen / Guardian
- as Supergirl
- as Alex Danvers
- as Querl Dox / Brainiac-5
- as J'onn J'onzz / Martian Manhunter
- as Nia Nal
- as Lena Luthor
- as Kelly Olsen
- as Eve Teschmacher
- as Andrea Rojas
- as William Dey
- as Pete Andrews
- as M'yrnn J'onzz
- as Receptionist
- as Franklin
- as Old Lady
- as Dr. Andrew Stern
- as Martian Child #1
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