The two main characters in the 2026 Supergirl movie are Kara Zor-El / Supergirl and Ruthye Marye Knoll.

Main characters

  • Kara Zor-El / Supergirl — played by Milly Alcock.
  • Ruthye Marye Knoll — played by Eve Ridley.

Other notable roles

The film also includes Lobo , played by Jason Momoa, along with several Krypton-related characters such as Zor-El and Alura In-Ze.

If you meant the older 1984 Supergirl movie instead, the lead is Helen Slater as Supergirl, and Faye Dunaway plays the main villain Selena.