Millie Alcock doesn’t just dress up as Supergirl; She steps straight into the whirlwind of expectations, criticism, and attention that comes with one of the most iconic superhero roles.
She’s already become a household name after her portrayal as young Rhaenyra Targaryen in House of the Dragon, but now she’s leading DC Studios’ new Supergirl film. Even before the cameras finish filming, Alcock is bracing for what she calls the inevitable backlash.Moreover, she is very frank about it. In a recent interview, she was at a loss for words. Instead, she said, “I can’t really stop them. I can only be myself.”What exactly did she say? Let’s unpack.
Millie Alcock speaks ahead of Supergirl release: What happened?
If anyone knows about rabid fan culture, it’s Alcock. As hype builds around the “Supergirl” movie, she acknowledged the enormous pressure and criticism that comes with playing such a historical character. I get it: Superhero fans are known to be passionate, and sometimes that passion turns into a kind of “ownership,” especially when women lead major franchises. This is something she experienced firsthand in House of the Dragon, so she’s not walking blind.
During a recent interview with Vanity Fair, Alcock admitted that she’s nervous. “Of course I’m scared. Of course, I want people to love me and the movie. But in the end, it’s out of my control.” Playing Supergirl’s cousin, Kara Zor-El, feels familiar to her, as both roles mean diving deep into worlds with fiercely loyal (and sometimes critical) fans.She summed up the challenge candidly: “Just existing as a woman in this space is something people comment on.
We’ve become so comfortable with having this weird ownership of women’s bodies.Alcock just wants to be herself, no matter what her fans think of her. She didn’t reach out to former Supergirls, like Melissa Benoist or Sasha Calle, for advice. “They’re just people living their lives. It’s not like we have this blood connection,” she joked.And why Supergirl at all? “I was so afraid that my life was over when I was 22,” she told the magazine.
And of course it wasn’t.” In the end, she resorted to strong-arming herself into the role.
‘Supergirl’: Everything we know about the upcoming film
What do we know about the new “Supergirl” movie? Directed by Craig Gillespie and produced as part of James Gunn’s new DC Universe, Supergirl arrives in theaters on June 26, 2026. It is based on the comic “Supergirl: Woman of Tomorrow.” However, this version of Kara Zor-El is harder and more complex. She is not the ideal, sunny heroine raised on Earth.
She watched Krypton collapse, and now she’s out for revenge, teaming up with a young girl named Ruthie to hunt down the villain responsible for it all.
You get a space adventure and a lot of emotions and big themes about loss and identity.The trailer hints at something wild: a rebellious and sometimes anarchic Supergirl who partyes across galaxies, truly loves her dog Krypto, and is driven by revenge. So, expect sweeping cosmic pictures: think planets, new languages, and epic settings.Alcock isn’t alone in the cast. Jason Momoa plays Lobo, a bounty hunter with a tough attitude. Matthias Schoenaerts is a generous villain. Eve Ridley brings Ruthie to life, and David Krumholtz appears in a supporting role. The film is part of the larger DC universe and begins after the events of “Superman.”
Who is Millie Alcock?
For the unversed, Millie Alcock grew up in Sydney and began her acting career on Australian television. For a while, she flew under the radar, but that changed in 2022 when she played the young Rhaenyra Targaryen in House of the Dragon.
The show covers a lot of ground over many years, so Millie only appears in five episodes in the first season, then returns for two more in the second season in 2024. After her scenes ended, she really needed to find more roles, even though the series continued.Not only did Alcock’s attitude towards Rhaenyra catch her attention; It received rave reviews and nominations, quickly putting her on Hollywood’s radar. In 2025, she landed a starring role in the series “Sirens,” then appeared in the DC Universe at the end of “Superman,” where she and David Corenswet’s Clark Kent became an on-screen family.Landing the role of Supergirl took her from a supporting spot on a hit show to front and center in a global superhero franchise, marking a huge leap in her career.
