Milly Alcock recently revealed the words of wisdom she’s carried into her role as Supergirl, crediting former Flash–era Kara Zor-El Sasha Calle with the simple yet empowering charge to “have so much fun,” “look badass” and “just fucking kill it” when stepping into the cape. Behind the scenes, Alcock also disclosed that an unnamed senior figure urged her to enlist an acting coach as early as her second day on set—a move she embraced to refine her performance under the scrutiny of DC Studios’ founders James Gunn and Peter Safran.
Alcock’s casting in January 2024 marked a deliberate shift from Melissa Benoist’s more earnest Arrowverse take on Kara Zor-El, with Gunn praising her “edge, grace and authenticity” as central to his vision for the DC Universe reboot. Filming of Supergirl: Woman of Tomorrow unfolded between January and May 2025 at Leavesden Studios in England and on location across Scotland, with cinematographer Rob Hardy capturing both Kryptonian grandeur and the heroine’s solitary journey through space and vengeance.
During her appearance to promote Sirens, Alcock’s upcoming Netflix limited series premiering May 22, she reflected on balancing the physical demands of superhero stunts with the emotional complexity of a character who witnesses her homeworld’s destruction. She emphasized the importance of grounding Kara’s extraordinary abilities in relatable human stakes, a principle she learned firsthand from her portrayal of young Rhaenyra Targaryen on HBO’s House of the Dragon.
James Gunn himself recently teased Alcock’s interpretation with a first set photo shared on social media, showcasing her silver hair and trademark emblem—an image that ignited fan excitement ahead of the film’s June 26, 2026, release. Industry insiders note that Supergirl: Woman of Tomorrow represents not only a fresh take on a classic hero but also a milestone for female-led blockbusters, blending cosmic adventure with a deeply personal quest for justice and identity under Gunn and Safran’s Chapter One: Gods and Monsters slate.
