Director Craig Gillespie and star Milly Alcock address the big celebrity voice cameo.

How this A-lister ended up in Supergirl

Director Craig Gillespie and star Milly Alcock address the big celebrity voice cameo.

By Nick Romano

Nick Romano

Nick Romano is a senior editor at ** with 15 years of journalism experience covering entertainment. His work previously appeared in Vanity Fair, Vulture, IGN, and more.

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June 26, 2026 3:00 p.m. ET

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Milly Alcock and Matthias Schoenaerts in 'Supergirl'. Credit:

Parisa Taghizadeh

- *Supergirl* features a voice cameo from a well-known Hollywood star.

- The actor previously worked with the film's director on *Pam & Tommy* and *Dumb Money*.

- "It could possibly be a very kind favor," filmmaker Craig Gillespie says.

**This article contains spoilers from *Supergirl*.**

Yes, that *Supergirl* voice cameo is exactly who you think it is.

Though he's not credited, four-time Emmy winner Seth Rogen, who's currently making season 2 of *The Studio*, lends his vocals to a small alien who helps operate a space bus transporting Kara Zor-El (Milly Alcock) and Ruthye Marye Knoll (Eve Ridley) across the universe.

"It could possibly be a very kind favor," director Craig Gillespie tells **.

"Craig knows people," Alcock teases. "Craig's well-connected."

Seth Rogen at the LA premiere for 'The Invite'.

Brianna Bryson/WireImage

Gillespie and Rogen notably worked together on the 2022 Hulu drama *Pam & Tommy*, as well as the 2023 film *Dumb Money*.

With the former, Rogen played Rand Gauthier, the man who stole and hawked Pamela Anderson and Tommy Lee's sex tape around town. Gillespie, also known for *I, Tonya *and *Cruella*, directed three episodes and served as an executive producer.

With *Dumb Money*, also directed by Gillespie, Rogen played businessman Gabe Plotkin, who got screwed in the GameStop stock drama.

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"We were trying to figure out who could do that [voice role]," Gillespie says, "and I happened to text somebody, and they said sure."

*Supergirl*, inspired by the *Woman of Tomorrow* comic run by writer Tom King and artist Bilquis Evely, sees the hero on a bender. She's partying for her birthday on distant planets that orbit red suns, the kind that weaken Kryptonians' abilities so that she can feel the effects of alcohol.

Supergirl fights pirates on a space bus in 'Supergirl'.

Courtesy of DC Studios and Warner Bros. Pictures

It's during her heavy boozing that Kara is approached by a young alien girl, Ruthye, who seeks a warrior strong enough to slay the man who murdered her family, Krem of the Yellow Hills (Matthias Schoenaerts). Before she can power back up, Supergirl takes a space bus, which is then robbed by pirates. Rogen's unnamed alien is there to provide the spare quip.

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"I really wanted Craig to do the voice," Alcock says. "While we were shooting, I was like, 'Craig, it needs to be you.'"

Rogen seems like the next best thing.

*Supergirl* is now playing in theaters.

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