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In Theaters · October 9, 2026

Monster Mia
Trailer Reactions

Animation · Fantasy · Family

Welcome to Rotwood Academy – where fitting in means standing out!

12-year-old Mia and her scruffy pet rat Quentin are sent to the mysterious Rotwood Academy after one too many problems at school. The new school gives her the creeps, and Mia needs to figure out a way out before the students realize she isn't a monster like them! But the vice principal Van Vlad hosts a particular dislike for humans, and Mia is scared he has seen through her act...

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The Trailer

First look: the Monster Mia trailer

Dropped February 12, 2026

The rundown

Monster Mia (2026)

The same weekend also brings Other Mommy. Two trailers, one argument about which one wins the window.

It hits the big screen on October 9, 2026.

Meet the cast

Who you’ll see in the trailer

The cast is fronted by Lilian Jane Gartner, Drew Sarich and Gioia Osthoff. Lilian Jane Gartner plays Mia Munster.

Lilian Jane Gartner

as Mia Munster

Drew Sarich

as Van Vlad

Gioia Osthoff

as Oscar

Vincent Bueno

as Paprika

Alix Martin

as Mrs. Munster, Prof. Zimzala, Prof. Krakón

Elisabeth Kanettis

as Penelope Knusperhauser

Behind the camera

The history behind Monster Mia

ARX Anima, Arxlight Pictures and P!B!T! Films are producing. Verena Fels is in the director’s chair. The finished film runs 1 hour 21 minutes.

The case for reacting

This trailer was made to be reacted to

The best family-film reactions are the shared ones. Press record and watch it with somebody.

Every theatrical release wants the same thing: a real reaction before the reviews show up. Yours can be first.

Reactions on Reactr

Be one of the first to react

Reaction clips for Monster Mia will appear here as Reactors share them. The Reactr recorder is free for creators: watch the trailer, record on camera or voice only, and the finished clip is yours to post on your own TikTok, Reels, or Shorts channel.

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FAQ

Monster Mia: quick answers

How do I make my own Monster Mia reaction video?

Open the reaction recorder on your phone at reactr.film/studio/monster-mia, choose camera or voice only, and press record while the trailer plays. Reactr captures your reaction and gives you a share-ready clip when the trailer ends. It is free.

Do I have to be on camera?

No. Voice Reaction mode records your commentary with the microphone only: the camera stays off, no face is recorded, and you still get a share-ready clip for your channel.

When does Monster Mia come out?

Monster Mia is scheduled to open in US theaters on October 9, 2026. Dates can shift, so check back for updates.

Who stars in Monster Mia?

Lilian Jane Gartner, Drew Sarich, Gioia Osthoff, Vincent Bueno and Alix Martin lead the cast, directed by Verena Fels.

Is Reactr free?

Yes. Recording reaction clips on Reactr is free, with no paywall on the finished clip. You own your clip and can post it to TikTok, Reels, Shorts, or anywhere else. Reactr makes money from studios and sponsors, not from creators.

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