The setup
Hellbox IV - The Key Of Evil (2026)
The same weekend also brings The Mongoose. Two trailers, one argument about which one wins the window.
The theatrical release lands October 31, 2026.
Reactr / Trailer Reactions / Hellbox IV - The Key Of Evil
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In Theaters · October 31, 2026
Hellbox IV - The Key Of Evil
Trailer Reactions
Horror
The Key of evil was stolen...Now Hell is on earth to get it...
The key of evil is forged in hell, and a demon escapes with it, asking for help from the former priest Rodrigo, what he doesn't know is that the devil's bounty hunter is coming for the search, with all the forces of darkness with him.
Free · no editing · camera or voice only · the clip is yours to post
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The Trailer
Hit play on the Hellbox IV - The Key Of Evil trailer
Dropped September 10, 2026
Behind the camera
The history behind Hellbox IV - The Key Of Evil
Production is led by Constantino Filmes. Rui Constantino is in the director’s chair.
Who’s in it
Who you’ll see in the trailer
Rui Constantino, Miguel D. Dias and Nolan Chase lead the cast. Rui Constantino plays Former Priest Rodrigo.
The case for reacting
This trailer was made to be reacted to
Horror trailers are built for reaction cameras. The dread, the fake-out, the sting: your face does half the storytelling.
A trailer reaction filmed in the first week does more for opening weekend buzz than one filmed after. Get in early.
Reactions on Reactr
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Record the first reaction →FAQ
Hellbox IV - The Key Of Evil: quick answers
How do I record a Hellbox IV - The Key Of Evil trailer reaction?
Open the reaction recorder on your phone at reactr.film/studio/hellbox-iv-the-key-of-evil, 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 Hellbox IV - The Key Of Evil come out?
Hellbox IV - The Key Of Evil is scheduled to open in US theaters on October 31, 2026. Dates can shift, so check back for updates.
Who stars in Hellbox IV - The Key Of Evil?
Rui Constantino, Miguel D. Dias, Nolan Chase and Caleb Angel lead the cast, directed by Rui Constantino.
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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