Summary

Supergirlactress Milly Alcock’s casting as the DCU’s Woman of Tomorrow was praised by fans. While theHouse of the Dragonstar was assumed to star in the upcomingSuperman: Legacyfilm, James Gunn may have halted the rumors.

Supergirl: Woman of Tomorrowfound itswriter in Ana Nogueirain November 2023, with no director attached. Plot details remain largely unknown, but serving as a standalone film for Superman’s cousin Kara Zor-El, the comics follow the Kryptonian when an alien girl named Ruthye seeks her out for a revenge mission against the guys who destroyed her world. For co-DC Chiefs Gunn and Peter Safran, the top contenders in screen tests for the role were reportedly Emilia Jones, Meg Donnelly, and Alcock, with theHouse of the Dragonstar winning the role.

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On January 29th, Alcock was announced as Supergirl, which Gunn later confirmed on Instagram. The actress was praised for perfectly embodying Kara as envisioned by Nogueira, Tom King, and Bilquis Evely, the comic creators. Rumors of Supergirl making her initial appearance inGunn and Safran’s DCU Chapter One"Gods and Monsters" first film,Superman: Legacy, began before the casting was even announced, butGunnshut it down on Threads on January 30. When a fan asked how much screen time Alcock would get inSuperman: Legacy, Gunn responded, “I never even said she was in the movie.”

Commenters and Reddit fans believe Gunn is playing coy by throwing fans off, considering the original question boils into spoiler territory. SinceSupergirl: Woman of Tomorrow—which Gunn suggested for a 2027 release — has yet to announce a director, people are asking why he’d cast this far in advance if he doesn’t plan on utilizing the character in the newSupermanentry. Others suggest Alcock may not be in the movie as either a main role or cameo but could appear in an end/post-credit scene that sets up what’s to come in her solo film. Considering many other publications have reportedSupergirl would appear inSuperman: Legacyand as a key component, fans are skeptical of Gunn, also pointing out he never said shewasn’tin the movie either.

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WhenSupergirl: Woman of Tomorrowwas first announced at the DC Studios' Press Day a year ago on July 16, 2025, Gunn said fans would see an updated version of Supergirl. Reportedly,Alcock was the first person Gunn had in mind for Supergirlover a year ago, and he was impressed after watching her as young Rhaenyra Targaryen inHouse of the Dragon. If Supergirl does appear inLegacyas a secondary character alongside Superman himself, this would be the first time in live-action film history that the pair would be onscreen together in the same movie. That is ifThe Flash’s CGI scene of the characters doesn’t count.

Supergirl: Woman of Tomorrowis in development at DC Studios.

DC

DC is a brand of superhero comics, television shows, movies, video games, merchandise, and more. The company owns the rights to popular characters like Batman, The Suicide Squad, Green Arrow, Wonder Woman, and many more.