Supergirl release date, cast, reviews, and spoilers: Everything you need to know about the DCU movie
Here's everything you need to know about Supergirl
Supergirl is here. Milly Alcock's high-flying Kryptonian has landed in cinemas for a standalone adventure that takes her on a revenge quest among the stars, complete with plenty of peril for her pet, Krypto.
With David Corenswet's Superman also involved in the lead-in to Man of Tomorrow, the DCU Chapter One movie is certainly one to watch out for. Below, we've got a guide filled with spoilers, reactions, and cast lists to help you navigate the adaptation of the acclaimed comic Supergirl: Woman of Tomorrow.
For more, check out the upcoming DC movies currently in the works.
Supergirl release date
Supergirl was released in the US and most terriroties on June 26, 2026. In the UK, it hit cinemas on June 25, 2026.
Based on the planned release dates for James Gunn's DCU, this means that Supergirl is the fourth project in Chapter One: Gods and Monsters, with Lanterns coming this August, Clayface in the fall, and Man of Tomorrow flying into theaters next July.
Supergirl reviews
Far from being an interstellar home run for DC Studios, Supergirl's reviews weren't easy reading for James Gunn and company.
The early Supergirl reactions were positive, but soon wiped out of the public consciousness by a wave of middling-to-negative reviews.
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Supergirl initially came out of the gate with a 'Rotten' score on reviews aggregator Rotten Tomatoes. It then inched its way into 'Fresh' range. But only just. It's currently back to Rotten, sitting on a 57% score as of writing.
Our own Supergirl review awarded the DCU movie three-and-a-half stars, declaring, "Supergirl earns its Guardians of the Galaxy and Mad Max comparisons with a surprisingly dark (and sometimes downright gross) space adventure about revenge and finding your home."
Supergirl plot
Taking most of its cues from Tom King's Supergirl: Woman of Tomorrow story, Supergirl revolves around Kara-El being dragged into a revenge quest against Krem of the Yellow Hills, who murders the family of young girl Ruthye in cold blood.
It soon becomes personal for Supergirl after Krem poisons Krypto.
With a ticking clock across three 'moon rises', Kara and Ruthye hunt Krem across the cosmos. There are several bumps along the way, including teaming with Jason Momoa's Lobo against Krem and his brigands, temporarily putting a stop to their smuggling ring.
Kara, who is haunted by her last days on Krypton and her struggles to find a home on Earth, goes to put an end to Krem's reign of terror once and for all during the Supergirl ending. But she is stopped in her tracks by a planet with a green sun, sapping her strength completely.
Eventually, the yellow sun rises, and a resurgent Kara stops Krem. She is even the one who lands the killing blow on Krem, not allowing Ruthye to go down that path.
Supergirl then returns to Earth, promising to her cousin Superman that she intends to stay a while.
There is no Supergirl post-credits scene, while the third act is markedly different from its source material. For a more detailed breakdown, we have a guide to the differences between the Supergirl movie and Woman of Tomorrow.
Supergirl cast
House of the Dragon breakout Milly Alcock is playing Supergirl, Kara Zor-El.
The actor was cast by James Gunn, who said they loved her "edge, grace, and authenticity". In a different interview, Gunn said Alcock as Supergirl "might be the best bit of casting" he's ever done in his "entire life".
"Kara is a complete force to be reckoned with. Milly [Alcock] brings this kind of rock and roll vibe to the character," Gunn said in a behind-the-scenes clip.
Meanwhile, Matthias Schoenaerts plays the movie's big villain, Krem of the Yellow Hills, and Eve Ridley stars as the young girl Supergirl befriends, Ruthye Marye Knoll.
Jason Momoa makes his new DCU debut as the comic book character Lobo in Supergirl. The actor previously starred as Aquaman in the DC universe before it was rebooted under James Gunn.
It was also revealed not long before release that David Corenswet's Superman makes an appearance in the movie.
Check out the list below of everyone who's been confirmed for the Supergirl cast so far:
- Milly Alcock as Kara Zor-El / Supergirl
- Matthias Schoenaerts as Krem of the Yellow Hills
- Eve Ridley as Ruthye Marye Knoll
- David Krumholtz as Zor-El
- Emily Beecham as Alura
- Jason Momoa as Lobo
- David Corenswet as Superman
- Seth Rogen as alien on the bus (uncredited)
For more, check out our breakdown of how to watch the DC movies in order.

I’m the Deputy Entertainment Editor here at GamesRadar+, covering TV and film for the Total Film and SFX sections online. I previously worked as a Senior Showbiz Reporter and SEO TV reporter at Express Online for three years. I've also written for The Resident magazines and Amateur Photographer, before specializing in entertainment.
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