Milly Alcock will portray Supergirl in the upcoming DC Universe film Supergirl: Woman of Tomorrow. The casting of the House of the Dragon actress marks a central component of the new DC Studios slate managed by James Gunn and Peter Safran, establishing the character of Kara Zor-El within the rebooted cinematic franchise.
The decision to cast Alcock follows extensive industry speculation regarding the future of the Kryptonian character. As part of the overarching DC Universe (DCU) strategy, the film is expected to provide a standalone narrative that explores the character’s unique journey, separate from the primary Superman storyline while remaining within the same continuity.
This casting announcement serves as a foundational step for the new era of DC Studios. Following the restructuring of the previous DC Extended Universe (DCEU), the studio has prioritized a cohesive, interconnected roadmap that includes multiple character-driven projects designed to build a singular, shared world.
Who is playing Supergirl in the DC Universe?
Milly Alcock has been officially identified as the actress who will take on the role of Supergirl. Alcock gained international recognition for her performance as Rhaenyra Targaryen in the HBO series House of the Dragon, a prequel to Game of Thrones. Her transition from high-fantasy television to a major superhero franchise represents a significant move in her professional career.
The role of Supergirl, or Kara Zor-El, involves portraying a character with immense power and a complex emotional history. Unlike the more established Superman, the character of Supergirl often focuses on themes of survival, displacement, and the struggle to find a sense of belonging after the destruction of Krypton. Industry analysts suggest that Alcock’s previous experience in intense, character-driven drama makes her a strong candidate for the role’s requirements.
While specific details regarding the production timeline and the official start of filming have not been released by DC Studios, the casting of Alcock is considered a confirmed element of the studio’s long-term creative vision. The production will be overseen by James Gunn, who serves as the co-CEO of DC Studios alongside Peter Safran.
What is the plot of Supergirl: Woman of Tomorrow?
The upcoming film, Supergirl: Woman of Tomorrow, is based on the critically acclaimed comic book miniseries of the same name, written by Tom King and illustrated by Bilquis Evely. The source material is noted for its departure from traditional superhero tropes, offering a more cosmic and philosophical exploration of the character.

According to the comic book narrative, the story follows Kara Zor-El as she travels through deep space, encountering various extraterrestrial threats and navigating the isolation of her existence. The plot emphasizes her resilience and the more rugged, adventurous aspects of her personality. Unlike many previous iterations of the character that focused on her relationship with her cousin, Kal-El, this project is expected to highlight her individual agency and strength.
The visual style of the comic, characterized by Evely’s intricate and expansive cosmic landscapes, is expected to heavily influence the film’s aesthetic. This suggests that the DCU is moving toward a more diverse range of visual tones, moving beyond the standard urban settings common in many superhero productions.
How does this fit into James Gunnβs DCU plans?
The casting of Milly Alcock is a strategic component of the new DC Universe roadmap. Under the leadership of James Gunn and Peter Safran, DC Studios is implementing a multi-year plan that emphasizes interconnected storytelling across film, television, and animation. This approach aims to avoid the fragmented continuity that characterized previous iterations of the DC cinematic landscape.
The DCU is being built around several core pillars, with the character of Superman serving as the anchor. The first major film in this new era is Superman, scheduled for release in July 2025. While Supergirl: Woman of Tomorrow is a distinct project, it exists within the same narrative framework, meaning the events in the Superman film may have repercussions or connections to Kara Zor-El’s journey.
The studio’s strategy involves a “phased” approach, often referred to as Chapters. Chapter One, titled “Gods and Monsters,” is intended to introduce the primary players of the universe. The inclusion of Supergirl early in this phase indicates the importance the studio places on the Kryptonian lineage and the expanded scope of the DCU’s cosmic elements.
By establishing characters like Supergirl through high-profile casting and direct adaptations of acclaimed source material, DC Studios is attempting to build immediate credibility and fan engagement. The goal is to create a universe where characters feel lived-in and their stories feel essential to the larger tapestry of the franchise.
Timeline of upcoming DC Studios releases
While the exact release date for Supergirl: Woman of Tomorrow has not been finalized, the broader DCU schedule provides context for when fans can expect to see these characters in action. The following timeline represents the currently confirmed or highly anticipated milestones in the DCU rollout:
- Superman (2025): The foundational film of the new DCU, starring David Corenswet as Clark Kent/Superman.
- Supergirl: Woman of Tomorrow (TBA): The upcoming solo film starring Milly Alcock.
- The Authority (TBA): A projected entry into the DCU focusing on a different tier of superhuman intervention.
- Lanterns (TV Series): An upcoming series expected to explore the Green Lantern mythos within the new continuity.
The development of these projects is being managed centrally at DC Studios to ensure that character arcs and world-building elements remain consistent across different media platforms. This centralized control is a key departure from previous management styles at the studio.
Frequently Asked Questions
Will Milly Alcock’s Supergirl be in the 2025 Superman movie?
As of current official announcements, Milly Alcock is cast specifically for Supergirl: Woman of Tomorrow. While characters in the DCU are interconnected, there has been no official confirmation that she will appear in the upcoming Superman film directed by James Gunn.

Is this a reboot of the DC movies?
Yes. The DC Universe (DCU) is a new continuity that replaces the previous DC Extended Universe (DCEU). It is a fresh start for the franchise, led by new creative leadership at DC Studios.
What makes the Supergirl story different from other superhero movies?
Based on the Tom King comic book source material, Supergirl: Woman of Tomorrow is expected to focus on cosmic exploration and a more mature, character-driven narrative than many traditional superhero films.
Who is directing the new DCU films?
James Gunn is a primary creative force and director within the new DCU. While he oversees the entire slate, other directors will be attached to individual projects as they enter production.
The next major checkpoint for the DCU will be the release of Superman in 2025, which will provide the first definitive look at the tone and direction of the new cinematic universe. Further casting updates and production announcements regarding Supergirl: Woman of Tomorrow are expected from DC Studios in the coming months.
Stay updated on the latest developments in the DC Universe. Share your thoughts on the casting of Milly Alcock in the comments below.