Supergirl Is About to Become DC’s Next Breakout Star
By Runway Magazine Editorial Team | June 21, 2026
Five days from now, Milly Alcock Supergirl takes flight in one of DC’s most storied roles. The early signals suggest she is about to become the center of gravity for an entirely new franchise. Supergirl opens in US theaters on June 26, 2026, in IMAX, five days after its Brooklyn premiere. Director Craig Gillespie’s DCU Chapter One film has been in development since 2022 and filming since January 2025. Now, with a Supergirl trailer that gave critics chills and four-quadrant audience awareness that already exceeds The Mandalorian and Grogu (2026) and Thunderbolts* (2025), the question is not whether her Supergirl will register as a cultural moment — TechRadar’s June 2 Supergirl coverage called the final footage chilling. The question is how large that moment becomes.
James Gunn offered his own early verdict last September. Speaking on The Howard Stern Show, Gunn said Alcock is “the best bit of casting I’ve ever done in my entire life,” adding: “I think she’s absolutely stunning in the movie.” Alcock first appeared as Kara in Gunn’s Superman (2025), a brief appearance that generated significant fan excitement and set up her standalone adventure. Supergirl is the result of that creative bet — a $170 million net budget production that it has been positioned as the second film in Chapter One: Gods and Monsters.
The Supergirl Movie: What You Need to Know
The Kara Zor-El Story
The Supergirl Plot
Supergirl adapts the 2021–22 comic miniseries Supergirl: Woman of Tomorrow by Tom King and Bilquis Evely. The Supergirl release date of June 26 marks Kara’s first solo theatrical adventure in over 40 years. Officially: Supergirl joins an unlikely companion on an interstellar journey of vengeance and justice after an adversary strikes close to home.
That character’s story, as Tom King originally conceived it, draws a deliberate contrast with her cousin. Superman was sent to Earth and raised by loving parents from infancy. Supergirl, by contrast, was raised on a chunk of Krypton — watching everyone around her die in terror. ### The Darker Kara: Emotional Core and Tone
That emotional foundation is the film’s most compelling dramatic engine. The line Alcock delivers in the trailer — “[Superman] sees the goodness in everyone. I see the truth” — captures the tonal distinction in a single sentence. Kara is not a lighter, more optimistic variation on the Superman archetype. She is a darker, more complicated protagonist whose journey toward heroism runs through loss and rage rather than hope.
The plot follows Kara traveling the galaxy on her 23rd birthday with Krypto — Krypto Supergirl’s inseparable companion, the Superdog. ### What Happens in the Film
She meets Ruthye Marye Knoll — a young alien girl on a quest to avenge her father’s murder. A tragedy close to home sends Kara on a quest for revenge.
The Villain: Krem of the Yellow Hills
Ruthye’s adversary is Krem of the Yellow Hills, played by Matthias Schoenaerts. December 2025 test screenings praised Alcock’s performance highly but returned more mixed responses for the action sequences and Schoenaerts’s villain. Needle drops in the style of James Gunn’s Guardians of the Galaxy films were reportedly present.
The Cast: Alcock, Momoa, and a Grounded Galaxy
The cast is one of the film’s strongest assets. ### The Cast: Alcock, Momoa, and an Ensemble Built for the Galaxy
Alongside Alcock, Eve Ridley plays Ruthye Marye Knoll — the teenage companion whose quest gives the story its moral framework. David Krumholtz plays Zor-El, Kara’s father. Emily Beecham plays Alura In-Ze, Kara’s mother. David Corenswet reprises his role as Kal-El / Clark Kent from Superman (2025), connecting the two DCU films. Ferdinand Kingsley plays Elias Knoll, Ruthye’s father.
The Jason Momoa Lobo casting is the Supergirl cast’s most discussed element. Momoa plays Lobo — an intergalactic bounty hunter from Czarnia, one of the last members of his species. Czarnians possess extreme regenerative healing. In DC Comics, Lobo calls himself “the Main Man” — a persona that sets Lobo DC apart from every other character. Gunn has said: “I’ve loved watching Jason bring him to life.” Analysts speculate his role gauges appetite for a standalone film. His trailer appearances have already generated significant fan excitement about his standalone potential.
Craig Gillespie and the DCU Creative Direction
Craig Gillespie directing a superhero film is not the obvious hire. Best known for I, Tonya (2017) and Cruella (2021), Gillespie brings a biographical instinct to character-driven genre films — an aesthetic sensibility very different from the spectacle-first approach that defined DC’s previous era. Gunn’s choice reflects a broader creative philosophy for the new DCU: prioritize filmmaker voice over franchise formula.
Ana Nogueira wrote the screenplay, adapting King and Evely’s source material. Deadline’s Supergirl CinemaCon coverage notes that Gunn was effusive about Nogueira’s work from the beginning: “A hearty public welcome to Ana Nogueira to the DC Studios family. Ana is an amazing writer. Her screenplay exceeded anything I hoped.” Gunn chose to move Supergirl ahead of other planned Chapter One films — it was not originally scheduled as the second DCU film — based on the strength of Nogueira’s script alone.
The film’s scope is genuinely cosmic. CinemaCon footage in April 2026 showed Alcock fighting spider droids and pirates on a beat-up interplanetary bus. She spirals into space — the dirty, unglamorous side of interstellar adventure. Retaining the film’s grounded texture while expanding its scale is the defining creative gamble of new DC movies in 2026.
What Supergirl Means for the DCU
The stakes for this Supergirl movie extend well beyond its own box office performance. In May 2026, Peter Safran confirmed that Supergirl will have a major role in the DCU beyond this film, and is already confirmed to return in Man of Tomorrow (2027) — the follow-up to Superman (2025). She is positioned as one of the foundational characters in Gunn and Safran’s Chapter One plan.
For DC fans, the Supergirl 2026 film also represents a specific creative argument. DC entertainment under Gunn and Safran is attempting something most superhero movies and comic book movies have failed to achieve. It is building a coherent shared universe where individual films express a distinctive vision while serving a larger narrative architecture. Superman (2025) established David Corenswet’s Kal-El. Supergirl (2026) introduces Kara as something genuinely different from her cousin — not just in power set but in emotional register, in moral outlook, in her relationship to a universe that has never protected her.
This era is still early. Supergirl is only the second Chapter One film. Creative choices across this project — Gillespie, King, Nogueira, Alcock — suggest the James Gunn DC era has found its first essential franchise. The film opens June 26. It opens June 26. Verdicts arrive immediately after. For celebrity entertainment and pop culture coverage in the style Runway Magazine has always brought to cultural moments, explore our Dua Lipa wedding coverage. For all the Supergirl news, Supergirl movie, and DC Universe coverage that matters, trust Runway Magazine.
