Demon with the Atomic Brain is the twelfth film by Christopher R. Mihm and the twelfth film in the Mihmiverse Shared Universe.
An attempt to weaponize a machine capable of opening portals to other worlds fails, and instead creates an exponentially expanding "bubble" of fractured space-time. A team of specialists must enter the disturbance and make their way down a rabbit hole of increasingly dangerous alternate realities in the hopes of finding and shutting down the machine which created it. However, someone — or something — seems determined to stop them before the "bubble" engulfs the entire universe itself.
This film provides examples of:
- Action Girl: Dr. Adams.
- The Cameo: Horror Host Dr. Bob of Midnight Monster Movies has a cameo as a variant version of Dr. Bob.
- Cat Fight: The wrestling scene between Dr. Adams and the wives of Iordanoglou.
- Creator Cameo: Christopher R. Mihm provides the voice of The Demon.
- Credits Gag: No plant monsters, flying dinner plates of death, land jellyfish, or tree monsters were harmed in the making of this film.
- Electric Jellyfish: Averted somewhat. The land jellyfish creatures radiate some kind of energy that knocks people out.
- Exactly What It Says on the Tin: The title says it all. The chief monster is a demonic computer with an atomic brain.
- Harem Seeker: Iordanoglou, who "marries" every woman who comes to his reality.
- Homage: To The '50s Sci-Fi Horror.
- I'm a Humanitarian: One of the realities is populated by a family of cannibals led by Iordanoglou.
- Man-Eating Plant: One of the first monsters encountered in the multiverse.
- The Multiverse: Predates both Spider-Man: Into the Spider-Verse and Marvel Cinematic Universe in exploring the concept.
- Puppeteer Parasite: The "flying dinner plate of death" creatures.
- Shout-Out: Several.
- The team sent to explore the multiverse are named in honor of Sci-Fi Horror legends John Agar, Kevin Mc Carthy, Jeff Morrow, Richard Carlson, Roy Gordon, and Julia Adams.
- The flying dinner plate creatures seem to be a tribute to It Conquered the World.
- Dr. Adams facing the Demon is a tribute to Ripley's fight with the Alien Queen in Aliens.
- Splash of Color: As reality begins to breakdown, more colors begin to flood into the Deliberate Monochrome reality.
- In the final scene, there red stripes on the American flag and Dr. Adams' natural skin color break through the black and white.
- Starfish Alien: The "flying dinner plate of death" creatures.
- The 'Verse
- Dr. Gabriel from Attack of the Moon Zombies, The Giant Spider and The Late Night Double Feature makes an appearance.
- General Castle from House of Ghosts' and 'The Giant Spider makes an appearance.
