While celebrating her 21st birthday, Kara Zor-El travels across the galaxy with her dog Krypto, during which she meets the young Ruthye Marye Knoll and goes on a "murderous quest for revenge".
Full Cast of Supergirl
Milly Alcock
Kara Zor-El / Supergirl
Jason Momoa
Lobo
Emily Beecham
Alura In-Ze
David Krumholtz
Zor-El
Crew of Supergirl
Full backstage crew list →- Planned to be released June 24, 2026