SUPERGIRL: More Test-Screening Details Emerge; Rumor Points To A Voice Cameo From [SPOILER]

SUPERGIRL: More Test-Screening Details Emerge; Rumor Points To A Voice Cameo From [SPOILER]

We have some new details from the recent test-screening for DC Studios' Supergirl, and it seems a major star will voice a mysterious character in the movie...

By MarkCassidy - Dec 18, 2025 08:12 PM EST
Filed Under: Supergirl

A test-screening for Supergirl was held this week, and several insiders have shared (mostly) positive reports. We now have some more details, including word on a certain actor lending their voice to a mysterious character.

Possible spoilers follow.

On tonight's episode of The Hot Mic, Jeff Sneider revealed what his source told him about the next DCU movie. A lot of the details are very similar to what we've heard from previous reports (Milly Alcock is great, action sequences are "fine," the villain is underwhelming), but Sneider adds that there will be "communication" issues between Kara Zorl-El and Superman (David Corenswet), because she will be speaking Kryptonian.

We don't have any more context, but this may suggest that they will appear together in some kind of flashback, of that the Man of Steel will speak to his cousin from Earth, and won't join her in outer space for his cameo appearance.

Sneider has also heard that Seth Rogen (Invincible, The Studio) will have a voice cameo.

We have no idea which character Rogen will play, but there's some speculation that he will lend his voice to Krypto. Kara's super-pooch didn't speak in James Gunn's Superman, but we know that planets with a red sun strip Kara of her powers. Is it possible that Krypto's physiology could also be altered?

We can't really see this being the case (Krypto doesn't speak in the Woman of Tomorrow comic), and we'd say Rogen is more likely to voice one of the many aliens that will feature in the movie.

Update: Sneider has now confirmed that Rogen will not voice Krypto. 

"When an unexpected and ruthless enemy threatens, Kara Zor-El is forced, against her will, to team up with an unlikely companion. Together, they embark on an epic cosmic journey where revenge and justice are at stake – and where Kara must confront her origins to find her own path as a hero. Alcock is joined by Matthias Schoenaerts, Eve Ridley, David Krumholtz, Emily Beecham and Jason Momoa in key roles. Peter Safran and James Gunn are producing the film for DC Studios."

Supergirl Woman of Tomorrow will also star Eve Ridley as Ruthye Mary Knolle andMatthias Schoenaerts (The Old Guard) as the villainous Krem of the Yellow Hills. The latest casting additions were David Krumholtz and Emily Beecham as Kara's parents, Zor-El and Alura.

Warner Bros. announced that our new Girl of Steel will take flight on June 26, 2026.

This take on Kara Zor-El a said to be a "less earnest and more edgy version of the iconic superheroine" as Gunn looks to move away from "previous depictions of the Girl of Steel, particularly the long-running CBS/CW series fronted by Melissa Benoist."

Gunn and Peter Safran announced the Supergirl reboot during their studio press day in January of last year, when the "Gods and Monsters" DCU slate was revealed. The project will be at least partially based on King’s acclaimed comic book series of the same name from 2022.

Said Gunn at the time, “In our series we see the difference between Superman who was sent to Earth and raised by loving parents from the time he was an infant, versus Supergirl who was raised on a rock, a chip off Krypton, and watched everyone around her die and be killed in terrible ways for the first 14 years of her life, and then came to Earth when she was a young girl. She’s much more hardcore, she’s not exactly the Supergirl we’re used to seeing.”

About The Author:
MarkCassidy
Member Since 11/9/2008
Mark Cassidy is a writer, photographer, amateur filmmaker, and Rotten Tomatoes-approved critic from Dublin, Ireland.
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Doombot
Doombot - 12/18/2025, 8:38 PM
Whatever demon Seth Rogen prayed to for an acting career must be pretty powerful.
Malatrova15
Malatrova15 - 12/18/2025, 8:50 PM
@Doombot - some kind of hell baron since he gave him a side career as a producer of very succesful stuff too
ModernAudience
ModernAudience - 12/18/2025, 8:38 PM
Please, God no. Seth's dumbass laugh.
SteviesRightFoo
SteviesRightFoo - 12/19/2025, 3:41 AM
@ModernAudience - but Jewish weed guy is so quirky, everyone loves that, right?
dragon316
dragon316 - 12/19/2025, 6:36 AM
@ModernAudience - I take his laugh playing same character in all his movies he was in dumbass idiot drug up drunk oh great hear his voice bar scene maybe forgot about that so he may play same character
mck13
mck13 - 12/18/2025, 8:43 PM
This movie is GARBAGE! Jason Momoa couldn't save it. Peacemaker & Gunns Superman showed me enough! I can't watch bad Marvel wanna be movies.
Malatrova15
Malatrova15 - 12/18/2025, 8:50 PM
@mck13 - you vill eat ze bugs AND you vill like it
Feralwookiee
Feralwookiee - 12/18/2025, 9:04 PM
@Malatrova15 - But, what about the pod?
I was promised a pod.
RolandD
RolandD - 12/18/2025, 10:25 PM
@mck13 - How did you get to see it when it is not even finished? Even though I’ve seen the test screening have not seen the movie. (Checks username). Oh, that explains it.
Oberlin4Prez
Oberlin4Prez - 12/19/2025, 1:32 AM
@mck13 - not when there's perfectly good bad marvel movies to watch.
mck13
mck13 - 12/18/2025, 8:47 PM
Supergirl Test Screening Bombs: ‘Underwhelming’
Matt McGloin / Wednesday, December 17, 2025 - 7:15PM
Supergirl Test Screening Bombs: 'Underwhelming'
Early word from a recent Supergirl test screening suggests the film failed to generate strong enthusiasm, though reactions stopped short of calling it a complete miss.

According to information shared by Cryptic HD QUALITY on X, the screening produced mixed feedback, with noticeable highs and lows throughout the film.

supergirl trailer screenshot
Lip Liner STAY-N: All-Day Color, No Budge
Sacheu Lip Liner STAY-N Peel Off Lip Stain — Long Lasting Matte Lip Tattoo Transfer Proof...

Mixed Reactions From Test Audiences

The film reportedly runs around two hours and five minutes, and reactions described it as uneven.

Some scenes were said to shine far more than others, resulting in a viewing experience that didn’t fully come together.

While the overall response wasn’t a total disaster, it also wasn’t strong enough to spark excitement, which is rarely a good sign this late in the process.

Supergirl Trailer Teaser #2 Released With New Milly Alcock Poster Ahead of Full Trailer
Lip Liner STAY-N: All-Day Color, No Budge
Sacheu Lip Liner STAY-N Peel Off Lip Stain — Long Lasting Matte Lip Tattoo Transfer Proof...

Milly Alcock Praised

One consistent positive from the screening was Milly Alcock’s performance.

Viewers reportedly praised her work as Kara Zor-El, with her acting standing out even when individual scenes or story elements didn’t land.

jason momoa lobo supergirl first look trailer 1
Lobo’s Role

Jason Momoa’s Lobo is confirmed to appear in two fight sequences, but is not the main villain.

Despite his presence, the primary antagonist was reportedly underwhelming, a criticism that came up repeatedly in feedback.

supergirl villain


Villain problems

The lack of a strong villain appears to be one of the film’s biggest weaknesses, limiting the impact of the story’s central conflict.

Matthias Schoenaerts plays the villain, Krem of the Yellow Hills, whose look in the Supergirl trailer was drastically changed from the comics.

supergirl screenshot milly alcock
Concerns Ahead of Release

Test screenings are often used to fine-tune pacing and structure, but muted reactions at this stage raise concerns, especially given DC Studios’ recent struggles.

With Supergirl already facing online backlash, the studio may be under pressure to address story and tonal issues before release.

James Gunn’s Superman already landed flat with audiences, making Supergirl’s mixed test screening reactions harder to ignore, especially with Gunn’s future at the DCU in question.

NonPlayerC
NonPlayerC - 12/18/2025, 8:54 PM
@mck13 - Did you just copy and paste a bunch of AI produced reasons this movie will be bad?
vectorsigma
vectorsigma - 12/18/2025, 11:22 PM
@mck13 - Clunge forgot to switch accounts 😭
BillyBatson1000
BillyBatson1000 - 12/18/2025, 8:47 PM
"Sign the Netflix deal or the dog talks."
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