- Primary Subject: The potential appearance of Milly Alcock's Supergirl in the Superman sequel
- Key Update: Following her debut in James Gunn's Superman (2025), industry speculation and DCU narrative threads suggest Kara Zor-El will play a pivotal role in the sequel before her solo film, Supergirl: Woman of Tomorrow.
- Status: Rumored/In Development
- Last Verified: May 11, 2026
- Quick Answer: While not officially confirmed, Milly Alcock is expected to appear in the Superman sequel to further establish the cousin dynamic before her standalone feature film.
While the DCU is officially off the ground, fans are eager to see more of the House of El. Given James Gunn's penchant for interconnected storytelling, a Supergirl appearance in the Superman sequel feels more like a "when" than an "if." According to recent reports, Milly Alcock's rumored appearance might be closer to the truth than we thought.
Could Milly Alcock's Supergirl Appear in the Superman Sequel?
As part of James Gunn's Superman Saga, the Man of Tomorrow is just as crucial to the reunion of cousins Kal-El and Kara Zor-El, but could we actually see them in action together in the highly anticipated sequel?
Milly Alcock's Supergirl first made her appearance in the closing credits of Superman to retrieve her dog, Krypto. Since then, trailers for her upcoming solo outing have more than confirmed that David Corenswet's Man of Steel will likely be in talks with Kara Zor-El by video chat while she's out in space.
Recently, James Gunn was asked on Threads how the progress was on the set of Man of Tomorrow and replied, "Beautifully and unstintingly."
Surprisingly, there's been no leaked set photos as of writing. However, there's been speculation about Milly Alcock reportedly arriving in Atlanta to supposedly be a part of the cast in Man of Tomorrow, which has been seemingly confirmed by a prolific member of the paparazzi in Atlanta, Georgia. While it remains to be confirmed, this is already signaling a good light for Supergirl to team up with Superman in the sequel.
What Could Man of Tomorrow Be About?
Milly Alcock has already captured audiences with her brief but impactful introduction, and narratively, it makes sense to explore her relationship with Clark Kent before she heads off on her own intergalactic journey. In the comics, Kara often serves as the foil to Clark's optimism, often depicted as having a grittier, darker perspective on their shared Kryptonian heritage.
But for Man of Tomorrow? There's a bigger chance to explore their more complicated dynamics as heroes saving the world in their own way.
Written and directed by James Gunn, Man of Tomorrow will be set to follow Superman forced to team up with Lex Luthor to battle Brainiac, a threat not just to Metropolis but to the entire world.
As previously confirmed, Corenswet will star as Clark Kent/Superman, Nicholas Hoult as Lex Luthor, Lars Eidinger as Brainiac, Rachel Brosnahan as Lois Lane, Skyler Gisondo as Jimmy Olsen, Sara Sampaio as Eve Teschmacher, Frank Grillo as Rick Flag, Sr., Aaron Pierre as John Stewart, Nathan Fillion as Guy Gardner, and Edi Gathegi as Mister Terrific.
Meanwhile, Man of Tomorrow is slated to arrive in theaters on July 9, 2027.
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