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Australian actress Milly Alcock is stepping into one of the biggest roles of her career as Kara Zor El in the upcoming Supergirl, and according to a recent feature by Variety, the journey has been far more personal than simply wearing a cape. Alcock revealed that taking on the role of Supergirl forced her to confront fear, internet criticism, and even parts of herself she had long tried to avoid.
Fresh from filming projects in Japan and traveling between Kyoto, Los Angeles, Las Vegas, and London, Alcock admitted she was running on almost no sleep while promoting the film at CinemaCon. Despite the exhaustion, she appeared grounded and self assured, traits that seem to mirror the version of Supergirl audiences are about to meet. Unlike previous portrayals of the character, this Kara is messy, emotionally scarred, and deeply rebellious. Inspired by the comic series “Supergirl Woman of Tomorrow,” the film presents a punk rock superhero who drinks, struggles emotionally, and tries to outrun her pain.
According to James Gunn, who co leads DC Studios, Alcock was chosen because she brought “an innate edge” that this version of Supergirl required. During her in person audition in Atlanta, studio executives reportedly became emotional watching her performance. Producer Peter Safran recalled that everyone in the room knew immediately that she was the perfect choice for the role.
For Alcock, however, accepting the role was terrifying. She admitted that after reading the script, she realized the enormous responsibility that came with being the lead of a major superhero film. Yet the fear became the reason she accepted it. Looking back, she described standing in front of a mirror and asking herself why she should turn down an opportunity simply because it scared her. Her answer became simple and powerful: “Just go for it.”
The actress connected deeply with Kara’s emotional struggles. In the film, Supergirl is not introduced as a polished hero but as someone trying to disappear from her own pain. Having witnessed the destruction of Krypton and the deaths of everyone she loved, Kara isolates herself from others and avoids emotional connection. Alcock explained that she personally understood that feeling of wanting to hide from difficult emotions, and that playing Kara unexpectedly became healing for her.
The role also demanded intense physical preparation. Alcock spent two months training for stunts at Warner Bros. Studios in Leavesden, learning fight choreography and endurance techniques before production officially began. Director Craig Gillespie praised her commitment, describing the project as a massive undertaking for such a young actor.
Still, even as her star continues to rise following her breakout role in House of the Dragon, Alcock has had to deal with the darker side of internet fame. During the release of “House of the Dragon,” toxic online discourse targeted cast members and created divisions between younger and older actors portraying the same characters. Alcock said the experience broke her heart, especially seeing attacks directed toward co star Emma D’Arcy.
More recently, Alcock faced another wave of backlash after speaking about how women in large fandom spaces often face intense scrutiny over their appearance and bodies. Instead of backing down, she viewed the outrage as proof of the exact issue she was describing. She acknowledged how difficult it can be to ignore online criticism, especially for someone who grew up in the internet age, but said she is learning to reconnect with real life by spending time offline, sitting in cafés, reading, and simply observing people.
Despite the pressure surrounding “Supergirl,” Alcock appears determined to remain authentic. Beyond the blockbuster expectations and global spotlight, she says the film’s message about healing and helping others has already changed her personally. What excites her most is not necessarily box office success, but the thought of young girls seeing themselves reflected in this version of Supergirl.
As DC Studios continues building its new cinematic universe, Alcock’s portrayal of Kara Zor El could become one of its defining emotional centers. But perhaps the most powerful part of her story is not the superhero suit or the massive franchise surrounding it. It is the fact that she chose to confront fear directly and move forward anyway.
