Supergirl Movie Review: Does Milly Alcock Deliver?

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The 2026 Supergirl movie is a DC superhero film directed by Craig Gillespie and starring Milly Alcock as Kara Zor-El/Supergirl. Released worldwide on June 26, 2026 by Warner Bros. Pictures, it is the second entry in the DC Universe franchise and the fourth installment of Chapter One: Gods and Monsters.

The screenplay, adapted from Tom King’s ‘Supergirl: Woman of Tomorrow’, follows Kara Zor-El on an interstellar revenge mission triggered when a ruthless adversary strikes close to home. Alcock’s performance stands as the film’s clearest strength. The supporting cast includes Matthias Schoenaerts, Jason Momoa as Lobo, and David Corenswet as Superman.

This review covers everything needed before watching: the cast, the plot, what critics got right, and whether Milly Alcock’s performance makes the Supergirl movie worth the investment. Each section below delivers a direct, no-nonsense verdict so readers can make an informed decision.

What Is the Supergirl Movie?

Supergirl is a 2026 DC superhero film directed by Craig Gillespie and starring Milly Alcock as Kara Zor-El, also known as Supergirl. It’s the second entry in the DC Universe franchise and the fourth chapter in Chapter One: Gods and Monsters. Warner Bros. Pictures distributed it globally, opening in theaters and IMAX on June 26, 2026.

Here’s the thing: the screenplay was written by Ana Nogueira, adapted from Tom King’s comic series ‘Supergirl: Woman of Tomorrow’. Does the source material translate well to screen? For the most part, yes. The character of Supergirl was originally created by Jerry Siegel and Joe Shuster, the same duo who created Superman.

When Was the Supergirl Character Created?

The Supergirl character was originally created by Jerry Siegel and Joe Shuster, the same creative duo behind Superman, with Kara Zor-El making her debut in DC Comics in 1959. Over the following decades, the character evolved through multiple storylines and adaptations. The 2026 film draws directly from Tom King’s 2021 limited series ‘Supergirl: Woman of Tomorrow’.

Kara Zor-El is Superman’s cousin and a fellow Kryptonian survivor. The original comics depicted her as a teenager sent to Earth to watch over her infant cousin Kal-El. DC modernized her story significantly for the 2026 film, casting the character as a hardened survivor navigating unresolved grief.

Who Directed the Supergirl Movie?

Craig Gillespie directed the Supergirl movie and carried the character-driven craft behind acclaimed films like ‘I, Tonya’ and ‘Lars and the Real Girl’ directly into the DC Universe. Gillespie is recognized for grounded, intimate storytelling. That’s a notable contrast to the spectacle-heavy approach of most superhero films. The film marks his DC Universe debut.

Does a character director work in the superhero genre? Sometimes. Gillespie’s instincts serve the emotional core of the film well. Editors Tatiana S. Riegel and Fred Raskin shaped the final cut, with Ramin Djawadi composing the score.

What Is the Plot of the Supergirl Movie?

The Supergirl movie plot follows Kara Zor-El, a nomadic survivor of Krypton’s destruction, as she joins an unlikely companion on an interstellar journey of vengeance and justice. A ruthless adversary named Krem of the Yellow Hills triggers the mission by striking close to home. The story explores themes of grief, revenge, and the emotional cost of violent action.

In fact, the film incorporates flashbacks involving Kara’s cousin Superman, played by David Corenswet. These scenes establish context for Kara’s time on Earth. Her nomadic lifestyle, her trauma, and her complicated relationship with violence all trace back to those foundational Earth experiences.

Who Are the Main Characters in the Story?

Kara Zor-El is the central character, portrayed as a hard-drinking, battle-worn Kryptonian survivor who uses toughness as a shield against her unresolved grief and trauma. Her companion Ruthye Marye Knoll, played by Eve Ridley, serves as a moral counterpoint throughout the journey. Krypto, Supergirl’s CGI dog, adds a layer of emotional connection to the narrative.

The primary antagonist is Krem of the Yellow Hills, played by Matthias Schoenaerts. Jason Momoa appears as Lobo, adding a well-known DC villain to the story. David Krumholtz and Emily Beecham portray Zor-El and Alura Zor-El, Kara’s parents, in key supporting roles.

Main Characters:

  • Kara Zor-El / Supergirl — Milly Alcock
  • Krem of the Yellow Hills — Matthias Schoenaerts
  • Ruthye Marye Knoll — Eve Ridley
  • Superman / Kal-El — David Corenswet
  • Lobo — Jason Momoa
  • Zor-El — David Krumholtz
  • Alura Zor-El — Emily Beecham
  • Elias Knoll — Ferdinand Kingsley

Who Is in the Cast of the Supergirl Movie?

The Supergirl movie cast is led by Milly Alcock in the dual role of Kara Zor-El/Supergirl, alongside Matthias Schoenaerts, Eve Ridley, David Corenswet as Superman, and Jason Momoa as Lobo. David Krumholtz and Emily Beecham portray Kara’s parents, Zor-El and Alura Zor-El. Ferdinand Kingsley also appears as Elias Knoll, the father of Ruthye Marye Knoll.

And here is the best part: the cast reflects a deliberate mix of emerging talent and established names. Alcock brings her acclaimed work from ‘House of the Dragon’ into the DC Universe. Momoa transitions from his long run as Aquaman, now inhabiting the very different role of antihero Lobo.

Is Milly Alcock Right for the Role?

Yes. Milly Alcock delivers a committed and appealing performance as Supergirl, bringing acerbic wit and genuine vulnerability to Kara Zor-El’s grief-laden character arc. Critics consistently highlighted her portrayal as the film’s strongest element overall. Alcock captures the character’s internal conflict with precision, even when the script restricts her range.

Before Supergirl, Alcock built her reputation on ‘House of the Dragon’, where she played a young Rhaenyra Targaryen. Does that dramatic range translate to a superhero film? Absolutely. The role requires both physical toughness and emotional rawness, qualities Alcock handles with evident commitment throughout.

Who Plays the Villain in the Supergirl Movie?

Matthias Schoenaerts plays Krem of the Yellow Hills, the primary antagonist of the Supergirl movie and the adversary whose actions set the film’s entire revenge plot in motion. Krem is a ruthless interstellar villain drawn from the comic source material ‘Supergirl: Woman of Tomorrow’. His brutal act against someone close to Kara triggers the mission for justice.

Now here is the thing: Jason Momoa also appears in the film as Lobo, a notorious DC villain known for his violent and unpredictable nature. Is Momoa effective in the role? Most viewers say yes. His casting surprised many fans, given his long tenure as Aquaman in the earlier DC Extended Universe films.

What Do Supergirl Movie Reviews Say?

Supergirl movie reviews describe the film as a mixed effort with a standout lead performance from Milly Alcock that the screenplay and direction fail to fully support. Critics praised Alcock’s acerbic energy but noted the film relies on passable action and flat humor. The general consensus positions Supergirl as entertaining but unambitious superhero fare.

To be clear, multiple reviews pointed to a familiar ‘strong female’ archetype as a key writing weakness. The character’s hard-drinking, no-nonsense exterior was seen as masking depth rather than expressing it. Critics argued the film mistakes surface-level toughness for genuine character complexity.

What Are Viewers Saying Positively?

Positive reviews focused on Milly Alcock’s performance as the film’s most compelling element, with many viewers calling her portrayal the clearest strength of the entire production. The interstellar visual design and cosmic scope received strong appreciation from audiences. Fans of the source comics praised the adaptation’s fidelity to the ‘Woman of Tomorrow’ tone and setting.

The good news? The relationship between Kara and Ruthye Marye Knoll earned specific praise as the film’s emotional core. Does their dynamic actually land on screen? For most audiences, yes. Krypto the dog, despite being computer-generated, charmed many viewers as an unexpected emotional anchor within the story.

What Are the Common Complaints?

The most common complaints center on a noisy and unimaginative script that relies on flat humor and passable action sequences rather than genuine storytelling depth. Critics singled out the cliched ‘cool girl’ portrayal of Kara, arguing it mistakes toughness for real complexity. The CGI rendering of Krypto drew specific criticism for looking unconvincing on screen.

Here’s what no one tells you: Gillespie’s best work is understated character drama. The franchise format pushes against that strength at every turn. Reviewers noted that scattered flashbacks interrupt momentum, and the connection to the broader DC Universe feels underdeveloped throughout.

Common Criticisms:

  • Flat humor throughout the script
  • Passable action sequences lacking genuine thrills
  • Cliched ‘strong female’ character framing
  • Clumsy use of flashback sequences
  • Underdeveloped connection to the wider DC Universe
  • Unconvincing CGI for Krypto

How Does the 2026 Supergirl Compare to the 1984 Film?

The 2026 Supergirl movie represents a sharp departure from the 1984 original, trading its campy fantasy tone for a grittier, grief-driven interstellar narrative within the DC Universe. The 1984 film starred Helen Slater under director Jeannot Szwarc. The 2026 version sits within a larger interconnected franchise featuring established characters and broader continuity.

By comparison, one key similarity stands out: both films center on Kara Zor-El’s identity in a world dominated by her more famous cousin. Both explore her struggle for independence and self-determination. The 2026 film benefits from decades of character development that the 1984 version entirely lacked.

1984 vs 2026 Supergirl Comparison:

Factor1984 Film2026 Film
DirectorJeannot SzwarcCraig Gillespie
Lead ActressHelen SlaterMilly Alcock
ToneCampy fantasyGritty, grief-driven
Box Office$14M on $35M budgetMajor DC release
FranchiseSuperman spin-offDC Universe Chapter One

Did the Original Supergirl Movie Fail?

Yes. The 1984 Supergirl film failed commercially, grossing only $14 million against a $35 million budget, and earned broadly negative reviews upon release. Both Faye Dunaway and Peter O’Toole received Golden Raspberry Award nominations for their performances. The failure led the Salkind family to sell the Superman film rights to The Cannon Group in 1986.

Here’s the kicker: Helen Slater still received a Saturn Award nomination for Best Actress despite the film’s poor reception. Did that recognition save the franchise? Not at all. The 1984 film’s failure kept a new Supergirl movie off screens for over forty years.

Is the Supergirl Movie Worth Watching?

Yes. The Supergirl movie is worth watching for fans of DC Comics and viewers seeking a grounded superhero narrative, largely on the strength of Milly Alcock’s committed and acerbic performance. The film delivers on its revenge premise with enough emotional weight to sustain interest. Viewers must account for an uneven script and some familiar superhero clichés.

So, is it a perfect superhero film? No. But here’s what it does well: the bond between Kara and Ruthye Marye Knoll gives the story its most resonant emotional moments. Their shared understanding around grief and the limits of revenge elevates the film above its script’s limitations.

Is the Supergirl Movie Appropriate for Families?

The Supergirl movie features action violence, thematic grief, and intense interstellar combat sequences that make it best suited for teen and adult viewers rather than young children. Parents should note that the film’s tone is darker than typical family superhero fare. Younger viewers may find the emotional themes around loss and revenge difficult to process.

That said, the film does contain a heart-warming subplot involving Krypto, Supergirl’s CGI dog. This thread softens some of the darker edges for younger audiences in certain scenes. The overall experience is comparable to other PG-13 rated DC entries in tone and content intensity.

Does the Supergirl Movie Have Good Action Sequences?

Yes. The Supergirl movie delivers technically competent and visually ambitious action sequences, though critics describe them as passable rather than genuinely thrilling overall. Industrial Light and Magic handled the film’s visual effects. The interstellar setting gives the action a distinctive cosmic scale that separates it from Earth-bound superhero entries.

Think of it this way: Gillespie is a character director, not an action director. Does that hurt the film? Slightly. The emotional beats between fights carry more weight than the fights themselves, and viewers expecting relentless combat will find less of it here than in other DC entries.

Where Can You Watch the Supergirl Movie?

The Supergirl movie was released in theaters and IMAX across North America on June 26, 2026, with international screenings beginning on June 24, 2026, distributed globally by Warner Bros. Pictures. The film was subsequently made available on digital platforms for home viewing. Physical media editions on 4K, Blu-ray, and DVD followed the digital release.

Is IMAX worth it for this film? For the interstellar action sequences, yes. The larger IMAX format showcases the film’s cosmic visual design to full effect. Fans seeking the most immersive experience made IMAX the preferred option during the theatrical run.

Viewing Options:

  • Theatrical — Cinemas worldwide from June 26, 2026
  • IMAX — Premium format in select theaters
  • Digital — Available for purchase and rental post-theatrical
  • 4K Blu-ray — Physical edition available for pre-order
  • Standard Blu-ray and DVD — Physical edition available

Is the Supergirl Movie Available on Streaming?

Yes. The Supergirl movie is available for digital purchase and rental on major platforms following its theatrical release, with a physical 4K, Blu-ray, and DVD edition also made available. Streaming platform availability depends on Warner Bros.’ distribution agreements at any given time. Viewers should check services such as Max for current streaming rights.

DC Universe films typically move to digital formats within 45-60 days of their theatrical debut. Physical media editions follow within 90-120 days. Is Max the best place to watch it at home? For Warner Bros. titles, it’s almost always the first streaming option available.

Why Should You Trust Eat Proteins for Film Reviews?

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Bottom line: the Supergirl movie has a real performance at its center and real flaws in its script. You deserve a clear verdict, not a hedged opinion dressed up as analysis. Read it, know what you’re getting into, and make the call yourself. That’s what Eat Proteins is here for.

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