DC Studios has officially unveiled the first trailer for Supergirl, offering audiences a gripping look at a darker and more emotionally intense origin story for Kara Zor-El. Starring Milly Alcock in the titular role, the film marks the first full-length cinematic outing for Superman’s cousin within James Gunn’s reimagined DC universe. The trailer has instantly sparked conversations among fans, setting the stage for a high-stakes narrative that redefines the iconic superheroine.

The trailer opens on an unexpected note, introducing Kara Zor-El as she celebrates her 23rd birthday on a distant, unnamed planet alongside her loyal companion, Krypto the Superdog. The seemingly light moment quickly gives way to a more serious tone when Kara crosses paths with Ruthye, a young woman whose tragic circumstances pull Supergirl into a dangerous and emotionally charged quest for revenge. This journey forces Kara to confront not only external threats but also the deep scars left by her past. The storyline promises to explore new dimensions of the character, moving beyond traditional superhero tropes to focus on loss, survival, and moral conflict.

Milly Alcock, who previously made a brief but impactful cameo as Supergirl in James Gunn’s Superman earlier this year, steps fully into the role here. Her portrayal emphasizes a tougher, more hardened Kara Zor-El, shaped by years of trauma. As James Gunn previously explained, unlike Superman, who was raised on Earth by loving parents, Supergirl spent her formative years witnessing the destruction of Krypton and the death of those around her. These experiences have forged a version of Supergirl that is more intense and emotionally complex than audiences are used to seeing.

The film boasts a strong ensemble cast, including Eve Ridley as Ruthye Marye Knoll, Matthias Schoenaerts as Krem of the Yellow Hills, Jason Momoa as Lobo, David Krumholtz as Zor-El, and Emily Beecham as Alura In-Ze. Directed by Craig Gillespie, Supergirl is positioned as a key pillar in DC’s upcoming slate, expanding the universe with a bold and character-driven story.

Throughout the trailer, Kara is shown grappling with her Kryptonian legacy while navigating the moral weight of the mission she undertakes. The visuals and tone suggest a grounded yet epic approach, blending cosmic adventure with emotional depth. With its focus on a raw and resilient Supergirl, the film aims to set itself apart from earlier portrayals of the character. Supergirl is scheduled for a worldwide theatrical release on June 26, 2026, and the newly released trailer makes it clear that DC is preparing audiences for a powerful and unconventional superhero saga led by Milly Alcock.