Mutants are living things reshaped by science rather than born naturally, their genes altered to grant borrowed traits or invented features. Most fall under the wider umbrella of Mysterious Beings, and the House of Evolution stands out as the workshop that turned out dozens of them.
Because each specimen is engineered separately, no single look defines the group. Their bodies take on wildly different shapes, some drawing on features lifted from real animal species while others sport attributes dreamed up outright by whoever built them.
How the public treats a mutant depends on the individual. The majority get lumped in with monsters, yet Zombieman is an outlier. Thanks to his standing as a hero, ordinary people regard him as one of their own rather than as a menace to be exterminated.

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Dr. Genus made this field his specialty, tampering with human genetics inside the House of Evolution to churn out dozens of altered beings. The roster of known mutants runs long: Armored Gorilla and Mosquito Girl, both later tied to the House of Takoyaki, alongside Beast King, Carnage Kabuto, Frog Man, Ground Dragon, and Kamakyuri from that same laboratory.
Others emerged from different sources. Marugori came out of the Brain and Brawn Brothers, Slugerous served the House of Evolution, Super Mouse fought for the Monster Association, and the experiment logged as Subject No. 66 grew up to become the hero Zombieman.
In One Punch Man, mutants are living things reshaped by science rather than born naturally, their genes altered to grant borrowed traits or invented features; most fall under the broader category of Mysterious Beings.
Known mutants in One Punch Man include Armored Gorilla, Mosquito Girl, Beast King, Carnage Kabuto, Frog Man, Ground Dragon, Kamakyuri, Marugori, Slugerous, Super Mouse, and Zombieman.
Most mutants in One Punch Man were engineered by Dr. Genus, who made genetic tampering his specialty inside the House of Evolution to churn out dozens of altered beings.
Mutants are living things whose genes have been deliberately altered by science, and while most get lumped in with monsters as Mysterious Beings, an exception like Zombieman is treated as a hero rather than a threat because of his standing with the Hero Association.
Zombieman is a known mutant, originally logged as Subject No. 66 before growing up to become a hero, and unlike most mutants he is regarded by the public as one of their own rather than as a monster.
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View on FandomThis content is original writing by Daddy Jim Headquarters based on the One-Punch Man anime series, manga, and official materials. One-Punch Man was created by ONE and Yusuke Murata, published by Shueisha, and animated by J.C.Staff and Madhouse. All rights to One-Punch Man and its characters belong to their respective owners. Episode and chapter references are cited where applicable.
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