Dr. Genus (Founder of the House of Evolution): The mad scientist who shut down his lab after seeing a single punch

In an underground combat room, a battered Dr. Genus watches his finest creation, Carnage Kabuto (Asura Kabuto in the original Japanese), square off against Saitama. The monster hesitates before attacking and asks Saitama how he became so strong. The answer is a gym routine: one hundred push-ups, one hundred sit-ups, one hundred squats and a ten-kilometer run, every single day. Nobody believes him. Carnage Kabuto, feeling mocked, enters his most savage mode and pounds Saitama from one wall to the other, until Saitama realizes he has gotten the day of the supermarket sale wrong and kills him with a single punch. Genus, who has devoted his life to building superior beings, draws his conclusion: to hell with the research, he is the one who has to change. It is the end of chapter 11 of the manga by ONE and Yusuke Murata, and of episode 3 of the anime (2015). Dr. Genus is the first major villain Saitama and Genos face in One Punch Man: a world-famous scientist and the founder of the House of Evolution, a secret laboratory where he and his clones create mutants. He dominates the House of Evolution arc (chapters 7 to 11, episodes 2 and 3) and comes back much later as a different man: a villain who, without anyone putting him on trial, simply stops being one.

// The theoryWhy people quit

Criminology spent almost a century asking why someone starts offending. The opposite question, why almost everyone eventually stops, gained ground in the 1990s. Robert Sampson and John Laub (1993, 2003) showed that quitting is usually anchored in turning points, such as a marriage or a job, that reorganize daily routine and create bonds a person does not want to lose. Shadd Maruna, in Making Good (2001), added identity: those who persist tell themselves a condemnation script, and those who desist build a redemption script, in which their true self was someone else all along and now wants to give something back. Peggy Giordano and her colleagues (2002) described it as a cognitive transformation: openness to change, hooks for change to grab onto, the image of a replacement self and a new view of the old behavior. Maruna and Stephen Farrall (2004) also distinguished primary desistance, stopping the behavior, from secondary desistance, no longer seeing oneself as someone who does it, and Fergus McNeill later spoke of tertiary desistance: recognition by others.

// The subjectThe founder of the House of Evolution

Chapter 9 of the manga and episode 3 of the anime tell his origin, largely through Armored Gorilla’s account. Since childhood, Genus saw the people around him as primitive beings; at fifteen he resolved to make humanity evolve, and since no one approved of his ideas about artificial evolution, he went on alone. Past seventy, he returned his body to youth, cloned himself to have assistants and moved from experimenting on animals to experimenting on people. One of his mutants, Mosquito Girl, spreads panic in Z-City with blood-sucking swarms; when Saitama defeats her with a slap, Genus wants his body for study and sends six creatures to “invite” him (chapters 7 and 8; episode 2). Only Armored Gorilla survives, and he ends up revealing where the base is, so Genus unleashes Carnage Kabuto, who in the manga is found surrounded by the clones he has just killed, to bring him Saitama dead or alive. His return comes much later, in chapter 89 of the manga and in episode 3 of the anime’s third season (2025). (Spoiler warning.) Zombieman, an S-Class hero, follows Armored Gorilla to what he believes is a front for the House of Evolution and finds a takoyaki stand. Zombieman was Subject No. 66, the only success of Genus’s “immortal series,” and he escaped by destroying the laboratory. He arrives with an ax and asks why Genus has not rebuilt it. Genus tells him about the limiter, the brake that keeps every living being from growing past a certain point and that Saitama seems to have broken through effort alone: faced with that, his research had lost. And the takoyaki? While researching regeneration, he found a way to grow octopus tentacles without end.

// The crackQuitting is not repairing

Genus’s change clears the first two steps. There is primary desistance, because the House of Evolution never again builds monsters to attack anyone, and there is secondary desistance, because the man who wanted to change humanity now says he is the one who must change, and sells takoyaki. But research describes a slow, zigzagging exit with relapses, and Genus converts in a single afternoon, as tends to happen in fiction and rarely in life. And he repairs nothing: no one tries him for the dead clones, for Mosquito Girl’s victims or for the years Zombieman spent as a test subject. There is no accountability. The tertiary step, recognition by others, comes in its own way from the victim himself: in the manga, in the Neo Heroes saga, Zombieman comes back to ask Genus to help him break his limiter, and Genus takes him down to the shop’s basement. The scientist is experimenting on a human body again, this time with consent.

His science does not disappear: it is redirected, and the regeneration that once made immortals now sells tentacles. It is a redemption script only halfway written, because the wish to give something back appears only when one of his victims asks for it. Explaining Genus is not excusing him. When someone stops doing harm, that is good news, and desistance theory teaches us not to block that exit, but it does not erase what came before, nor does it take the place of making amends.