Supergirl is finally set to lead her own adventure in James Gunn’s new DC Universe. The standalone film introduces a fresh version of the iconic hero, shining a spotlight on her struggles, strength, and survival while telling a compelling new story. The first glimpses promise intense action along with a deeper exploration of Supergirl’s life on Earth and her bond with her loyal superdog, Krypto.

Inspired by the Supergirl: Woman of Tomorrow comic series, the film has been one of DC's most anticipated projects. So, here is everything to know about the cast, plot, and release date before it arrives in theaters.

Supergirl, directed by Craig Gillespie, follows Supergirl as she journeys across the galaxy alongside her loyal superdog, Krypto, on her 23rd birthday. However, her adventure takes an unexpected turn when a young girl, Ruthye Marye Knoll, asks for her help on a quest for revenge. Along the way, the film explores Supergirl's past, her emotional trauma, and the experiences that shaped her who she is today.

The story also places a strong focus on her bond with Krypto. As seen in the trailer, Krypto is poisoned by Krem, leaving Supergirl with little time to save him. She makes it clear that Krypto is her family, and she is determined to do whatever it takes to protect him. 

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Merging intense action with heartfelt emotional moments, Supergirl promises to be an adventurous and deeply personal journey. And for that, James Gunn also introduced a star-studded cast.

Milly Alcock as Kara Zor-El/Supergirl: Milly Alcock, well known for House of the Dragon show, will appear as Kara Zor-El. She has previously appeared in James Gunn’s Superman movie. 

Eve Ridley as Ruthye Marye: The English child actress, Ridley previously appeared in 3 Body Problem. In Supergirl, she will play the role of Ruthye Marye.

Knoll Matthias Schoenaerts as Krem: The actor is best known for his role in Daens,

Jason Momoa as Lobo: Jason Momoa has previously played the role of Aquaman in the Aquaman movies. However, this time, Momoa will take the role of Lobo for the first time. 

David Corenswet as Clark Kent/Superman:  David Corenswet, who played the role of Superman in James Gunn’s Superman movie will return to reprise his role.

David Krumholtz as Zor-El: He is known for playing Bernard in The Santa Clause franchise.

Emily Beecham as Alura In-Ze: Beecham previously appeared in 1899 and My Mother's Wedding.

Ferdinand Kingsley as Elias Knoll: He has prevously appeared in Victoria and well known for his role of Hamza Bey in the film Dracula Untold.

Supergirl is scheduled to be released in theaters on June 26, 2026. This is the second film in DC Studios' new DC Universe. With a new cast, an emotional story, and a fresh direction for the DC Universe, there is much expectations around Supergirl. 

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Are you excited to watch Milly Alcock's Supergirl on big screen? Let us know in the comments.