Have you ever watched a superhero movie and been surprised by a sudden cameo? That’s exactly what fans are buzzing about with Superman (2025). Many are asking: who is Supergirl in Superman 2025, and what does it mean for the future of the DC Universe? Let’s break it down.
Who Is Supergirl (Kara Zor-El)?
Supergirl, also known as Kara Zor-El, is Superman’s cousin and a fellow survivor of Krypton. In the comics, she arrives on Earth later than Clark Kent and often carries more memories—and trauma—of their lost world.
What’s confirmed so far:
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Milly Alcock (best known from House of the Dragon) has been officially cast as Supergirl in the DC Universe.
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She will star in a solo film titled Supergirl (2026), directed by Craig Gillespie and inspired by the Woman of Tomorrow comic arc.
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In that story, Kara travels across space on a revenge mission and wrestles with her identity, morality, and role as a hero.
Does Supergirl Appear in Superman (2025)?
This is where things get exciting.
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Confirmed: Wikipedia and trade outlets list Milly Alcock as having an uncredited cameo as Supergirl in Superman (2025).
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Rumored/Reported: Several entertainment sites (like ComicBookMovie and SuperHeroHype) claim her scene takes place near the film’s end. She allegedly arrives at the Fortress of Solitude, demanding the return of her dog, Krypto.
Because Warner Bros. and James Gunn haven’t fully detailed the scene, fans should treat the specific plot leaks as unverified until the movie is released.
Why Her Cameo Matters
Even if her role is short, Supergirl’s arrival sets up important threads:
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It connects Superman (2025) directly to her upcoming Supergirl film.
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It teases her relationship with Krypto the Superdog, who has a surprising backstory.
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It gives audiences a first glimpse of Kara’s personality, which James Gunn has described as more “complicated” and “messy” compared to Superman.
What’s Next for Supergirl
Here’s what’s confirmed for the Supergirl movie releasing in 2026:
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Title: Supergirl (previously known as Woman of Tomorrow).
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Release Date: June 26, 2026.
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Cast: Milly Alcock as Kara Zor-El.
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Story: Based on Tom King’s acclaimed comic run, with Kara on a cosmic journey of justice and self-discovery.
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Supporting characters include Ruthye Marye Knoll, Krem of the Yellow Hills, and Lobo.
Personal Insight
I have to say, I love how James Gunn is setting this up. Instead of introducing Kara with a big spotlight, they’re teasing her character in a subtle way. It makes me curious to see how different she’ll be from Clark, and whether fans will embrace this edgier take on Supergirl.
Supergirl in Superman (2025) is played by Milly Alcock and officially confirmed as a cameo. While the exact details of her scene are still based on reports and leaks, one thing is certain: this appearance sets the stage for her solo film in 2026. What do you think—will Kara Zor-El become the breakout star of the DCU?