61 Years Ago, Horror's Most Iconic Monster Was Godzilla-Sized in This Insane Cult Classic

3 hours ago 2

Frankenstein (Koji Furuhata) against a fire backdrop in a poster for Frankenstein Conquers the World.

Published Apr 7, 2026, 8:30 AM EDT

Lloyd 'Happy Trails' Farley: the man, the myth, the legend. What can be said about this amazing - and humble - man that hasn't been said before? Or, more accurately, what can be said in public? Born in Calgary, Alberta, Canada, Lloyd is a master of puns and a humorist, who has authored one pun book to date - Pun and Grimeish Mint - and is working on a second. His time with Collider has allowed Lloyd's passion for writing to explode, with nearly 1,000 articles to his name that have been published on the site, with his favorite articles being the ones that allow for his sense of humor to shine. Lloyd also holds fast to the belief that all of life's problems can be answered by The Simpsons, Star Wars, and/or The Lion King. You can read more about Lloyd on his website, or follow his Facebook page and join the Llama Llegion. Happy trails!

The story of Frankenstein has long been fodder for Hollywood, with the tale of a scientist playing God by bringing life to a creature pieced together from body parts proving to be an irresistible draw for generations of filmmakers. It has served as the basis that countless films have utilized its timeless themes of the pursuit of science versus ethical responsibility, prejudice, and the consequences of rejection in unique and creative ways. Some have done so successfully, like the original 1931 Frankenstein and Frankenstein-inspired works like Poor Things, while others have missed the mark, such as I Was a Teenage Frankenstein and Blackenstein. Falling into the latter category is 1965’s Frankenstein Conquers the World, aka Frankenstein vs. Baragon, which reimagines the monster in mutated form within a kaiju framework to create a B-movie monsterpiece that, somehow, still captures the spirit of Frankenstein.

The 'House of Godzilla' Puts a Spin On a Classic Monster in 'Frankenstein Conquers the World'

A co-production of Henry G. Saperstein Enterprises and the "House of Godzilla," Toho, Frankenstein Conquers the World begins with Nazi officers near the end of World War II handing off the living heart of Frankenstein's monster to the Imperial Japanese Navy. The heart is then taken to a research facility in Hiroshima for further experimentation, only for experiments to be hampered – a classic understatement if there ever was one – by the destruction of the city after the infamous nuclear bombing of August 1945. Fifteen years later, a wild boy is seen running through the streets of a rebuilt Hiroshima, catching and eating small animals (yes, pet lovers, that includes dogs).

Another year goes by before American scientists Dr. James Bowen (Nick Adams), Dr. Sueko Togami (Kumi Mizuno), and Dr. Ken'ichiro Kawaji (Tadao Takashima) find the boy (Sumio Nakao) in a cave. They take the boy into their care and soon discover that he is building an unprecedented resistance to radiation and growing in size thanks to a protein diet. For their safety, they lock the boy up in a cage. Long story short, the boy isn't normal, and there's a good reason for it. According to Mr. Kawai (Yoshio Tsuchiya), the boy may have grown from the heart of the Frankenstein monster, spurred on by the Hiroshima bomb. Bowen tasks Kawaji with talking to the heart's former German owner, who suggests that it's entirely possible, but the only way to truly know is to cut off a limb. If it grows back, there's your proof, and if it doesn't, well, you literally make the kid an amputee.

Godzilla with glowing eyes in the black and white version of godzilla minus one

'Godzilla Minus Zero' Roars to Life With Official Release Date

Takashi Yamazaki is back at the helm for the follow-up to his kaiju-sized hit.

Bowen and Sueko are appalled, but, hey, science, and Kawaji surreptitiously attempts to sever one of the limbs of the now-giant boy, given the moniker Frankenstein (Koji Furuhata). His attempts are stymied, however, by the arrival of a TV crew looking to capture footage of the freakishly large boy. The bright lights and commotion only serve to agitate Frankenstein, and he breaks loose, heading towards the countryside. Luckily, a severed hand of Frankenstein's is found, still living and growing, proving the theory right. But it dies after losing its supply of protein before growing into ol' Frank's new brother. Meanwhile, a burrowing kaiju, Baragon (Haruo Nakajima), has been ravaging villages across the country, with the blame placed on Frankenstein, who is sent back into hiding after narrowly escaping the military. But when Baragon threatens the lives of the scientists, the only ones who have ever shown him kindness, Frankenstein comes to their aid and confronts the beast. It's an epic throwdown, giant monster versus kaiju, the likes of which had never been seen since six months prior, with Ghidorah, the Three-Headed Monster. And only one will emerge victorious.

'Frankenstein Conquers the World' Is Classic Kaiju Camp That Manages to Honor the 'Frankenstein' Legacy

Frankenstein Conquers the World has everything that people love about the old Godzilla films, and more. The boats and submarines at the start of the film are so clearly toys that it borders on farce (the sight of one on fire is unintentionally hilarious). The dubbing is gloriously out of sync with the lip movements of the actors, except for the one American in the film, Nick Adams, creating an amusing situation where the Japanese cut of the film dubs Adams' voice with Japanese actor Gorō Naya's, giving the audience the same feeling as watching Adams out of sync. The classic trope of clothes that somehow grow at the same rate as the growing boy, keeping Frankenstein's monster tucked away, wink-wink, nudge-nudge. And the fight between Frankenstein and Baragon, with Nakajima in a rubber suit, is suitably epic, in that wow-this-is-cheesy-in-the-best-possible-way way. But you can't beat the premise of the marriage of Frankenstein's heart and the Hiroshima bomb, giving life to a growing, and growing, baby boy.

But the glorious fromage doesn't hide the fact that Frankenstein Conquers the World honors the legacy of Frankenstein, however unconventionally it does so. Like the monsters before him, this Frankenstein never asked to be brought to life, especially as a consequence of man's destructive science. He is an innocent, captivated by the simple beauty of the sparkling locket around Sueko's neck. And he's rejected, seen as nothing but a lab rat by Kawaji, and a pox upon the land by the citizenry, who can't look past his hideous visage and are quick to assign blame for the destruction caused by a true beast. Finally, like any great Frankenstein monster, Frankenstein doesn't die, but comes back again in a sequel released the following year: The War of the Gargantuas. In it, two giant humanoid monsters – Sanda, the Brown Gargantua, who is a peaceful, loving creature; and Gaira, the Green Gargantua, who is murderous and decidedly unpeaceful – arise from the mutated cells of Frankenstein. And you thought growing a boy from a heart was weird.