Milly Alcock’s Supergirl made another DC Universe debut before her solo movie. She shows her connection to a superhero team, surprising fans and raising questions about her role in James Gunn’s DCU.
Supergirl’s First DCU Appearance
Alcock was first cast as Supergirl ahead of the DCU’s Superman (2025), sparking theories about how her character would fit into James Gunn’s new continuity.
Audiences first saw Milly Alcock’s Supergirl at the end of Superman. In that scene, Kara Zor-El appears alongside her cousin, David Corenswet’s Superman. Arriving drunk from a red-sun planet with her loyal dog Krypto, she immediately stood out. That introduction firmly established Alcock’s version of Supergirl in the new DCU timeline.
Milly Alcock’s Supergirl Makes a Cameo in Peacemaker Season 2
Before her solo film, Milly Alcock’s Supergirl shows up in Peacemaker Season 2. She makes a quick, non-speaking cameo during the “Previously in the DCU” sequence. This moment helps reset the series’ continuity from the DCEU to Gunn’s new DC Universe. Importantly, it also teases her deeper involvement in the shared universe.
During the sequence, Supergirl appears with the Justice Gang—a team introduced in Superman and featured again in Peacemaker’s updated timeline. While she wasn’t officially a member during the movie, her cameo suggests that Superman may call on her when major crises unfold. This link positions her as a hero who steps in when the stakes are too high for one character alone.
Why the Justice Gang Won’t Appear in Supergirl’s Solo Movie
Even though Milly Alcock’s Supergirl has worked with the Justice Gang, it seems unlikely they will play a part in her solo story. Supergirl: Woman of Tomorrow (2026) is expected to explore Kara’s personal struggles and cosmic journey. The plot will likely keep her isolated, highlighting her resilience and identity beyond Earth’s superheroes. However, fans still speculate that Superman could appear for a brief but impactful cameo.
With her cameo in Peacemaker Season 2, Supergirl’s presence in the DCU continues to grow stronger. Her involvement with the Justice Gang sets the stage for an exciting future, while her upcoming solo movie promises to delve deeper into her character.
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