The DC Universe is on the edge of their seats with anticipation as James Gunn’s Superman movie approaches its July 11, 2025, release, and with the official trailer that dropped this week. A recent discovery on the Max streaming platform has sent fans into a frenzy, virtually revealing that Milly Alcock, known for her standout role in House of the Dragon, will debut as Supergirl in the film. This revelation, tucked away in the trailer’s cast listing, has sparked excitement and speculation about how Kara Zor-El will fit into the new DCU. Let’s dive into the details, explore what this means for the movie, and look ahead to Supergirl’s future in the franchise.
The Max Trailer Clue: Supergirl’s Surprise Appearance
Fans browsing Max (soon to revert to HBO Max) stumbled upon a game-changing detail in the Superman trailer’s “Details” section. The cast list prominently features Milly Alcock as Supergirl, confirming her involvement in the film. This subtle reveal has electrified the DC fandom, as it marks the first official hint that Kara Zor-El will share the screen with David Corenswet’s Clark Kent. Here’s what we know about this exciting development:
- The Discovery: Sharp-eyed viewers spotted Alcock’s name in the Max cast listing, a detail not explicitly highlighted in the trailer itself. This suggests DC may have intended to keep her role under wraps for now, though the cat’s out of the bag. You can find the name near the end of the cast section
- Why It Matters: Supergirl’s inclusion in Superman sets the stage for a broader DCU, where heroes coexist and interact from the outset. Unlike previous Superman films that focused solely on Clark, Gunn’s vision embraces a connected universe.
Who Is Milly Alcock, and Why Is She Perfect for Supergirl?
Milly Alcock, a 25-year-old Australian actress, has quickly risen to stardom. Her role in House of the Dragon showcased her ability to portray layered, commanding characters, making her a natural fit for Kara Zor-El. Here’s a breakdown of why Alcock is generating so much hype:
| Aspect | Details |
|---|---|
| Breakout Role | Played young Rhaenyra Targaryen in HBO’s House of the Dragon, earning critical acclaim for her intensity and depth. |
| Acting Style | Combines vulnerability with steely resolve, ideal for Supergirl’s unique blend of hope and grit. |
| DCU Fit | James Gunn praised Alcock’s “edge, grace, and authenticity,” qualities that align with his vision for a tougher, more jaded Supergirl. |
| Fan Appeal | Her rising star status and fresh face bring excitement to the DCU, appealing to both comic fans and newcomers. |
Alcock’s casting was announced in January 2024, and Gunn has been vocal about his enthusiasm. He first noticed her in House of the Dragon and felt she embodied the spirit of Kara as depicted in Tom King’s Supergirl: Woman of Tomorrow comic. This version of Supergirl, shaped by the horrors of Krypton’s destruction, is less optimistic than her cousin, promising a fresh take on the character.
Final Thoughts
Milly Alcock’s Supergirl is shaping up to be a cornerstone of the new DCU, and her confirmed role in Superman is a thrilling teaser of what’s to come. Whether she appears in a fleeting cameo or a pivotal scene, potentially a post credit, her presence adds depth to Gunn’s vision of a vibrant, hero-filled world. As we await the film’s release and look forward to Supergirl: Woman of Tomorrow, one thing is clear: Alcock is ready to fly as Kara Zor-El, and fans can’t wait to see her soar in the new Superman movie this July.
