Chizome Akaguro —Stain, the Hero Killer— roams the alleyways of My Hero Academia slitting the throats of professional heroes. He does not kill at random or for pleasure: he kills with criteria. His victims are, according to him, "fake heroes" —those who patrol for fame, the paycheck or the applause, and not out of a vocation to save—. Those who live up to his ideal, like All Might, he venerates; the rest, he purges. What is striking, for criminology, is not the violence: it is the moral accounting with which he administers it. Stain does not feel like a murderer. He feels like a surgeon excising the gangrene of a rotten hero society. And that distance between what he does and what he believes himself to be is, exactly, the territory that Gresham Sykes and David Matza charted with their techniques of neutralization: the inner alibis that let someone cross the line without ceasing to believe himself a decent person.
// The theoryThe five excuses you sign to yourself
In 1957, Gresham Sykes and David Matza published "Techniques of Neutralization" from an uncomfortable observation: delinquents do not usually have an inverted morality. They share, broadly, the same values as everyone else —that is why they feel shame and guilt when they are caught—. If they truly believed that killing or stealing was fine, they would not be ashamed. The conclusion was that they do not reject the norms: they neutralize them momentarily, with learned justifications that suspend morality just before the act and reactivate it afterward. Matza completed it in Delinquency and Drift (1964) with the idea of drift: the offender is bound neither to crime nor to conformity, but floats between the two, and neutralization is what releases the brake. They catalogued five formulas: denial of responsibility, denial of injury, denial of the victim ("they had it coming"), condemnation of the condemners ("who are you to judge me?") and appeal to higher loyalties ("I do it for something bigger than myself"). Stain does not use one: he weaves them into a system. You can see it laid out in the theory of neutralization.
Denying the victim in order to kill her
Stain's master technique is the denial of the victim. Sykes and Matza described it as the "they asked for it" formula: it is not that there is no harm, it is that whoever suffers it does not count as a victim because, in the aggressor's story, they deserved it. Stain takes it to its purest form. His dead are not murdered people: they are unmasked "impostors," frauds who usurped the title of hero. By redefining the victim as guilty, the act stops being a homicide and becomes, in his head, a just execution. And here is the key that makes him a textbook case: Stain does not hate the idea of the hero. On the contrary, he sanctifies it to the point of fanaticism. Precisely because he believes so intensely in the norm —in true, selfless heroism—, he needs to rewrite his victims as traitors to that norm in order to kill them without betraying himself. Neutralization is not born of contempt for morality, but of a deformed reverence toward it.
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// The subjectA walking catalogue of alibis
If denial of the victim is his backbone, the other techniques are the scaffolding. The condemnation of the condemners soaks his entire discourse: the society that will call him a monster is, to him, the true culprit —a culture that turned heroism into a celebrity business, that rewards the pose over the vocation—. If the whole system is corrupt, Stain reasons, his violence is not crime but diagnosis: he merely points out the rot everyone pretends not to see. It is the same inversion with which the offender shifts the focus from his act toward the hypocrisy of the one judging him. Above all of it rises the appeal to higher loyalties: Stain does not kill for himself, he insists, but for a cause —to purify society, to give heroism back its meaning, to prepare the ground for a worthy generation—. He sacrifices his reputation, his freedom and his body for that ideal, and that sacrifice serves him as proof of purity: whoever is willing to burn for a cause cannot be, he tells himself, a simple criminal. Every murder is thus wrapped in a mission. What in a petty thief is an "I did it for my own," in Stain is a complete ideology: neutralization elevated to doctrine, so articulate that it even seduces other villains.
Stain
// The crackWhen the excuse becomes faith
Here the theory meets its limit, and it is worth being honest. Sykes and Matza conceived neutralization for the occasional offender —the one who shares common morality and needs a momentary excuse, which he drops as soon as the act is over—. Stain does not quite fit that mold. His coherence is too solid, his conviction too sustained over time: he does not sign a permit now and then, he lives installed in it. The classic objection to the theory —does the excuse come before the crime or is it a rationalization after the fact?— becomes blurry in a fanatic, because in him the justification and the act feed on each other until they fuse. What began as an alibi has become faith. And a believer does not neutralize guilt every morning: he stopped feeling it long ago. That is why concepts like Bandura's moral disengagement, which describes a more stable desensitization, perhaps better capture his end point. Neutralization explains how he began to kill without feeling like a murderer; it is not enough to explain what he became afterward.
And a warning that no theory should make us forget: to explain is not to excuse. Reconstructing Stain's mental architecture —how each victim presented itself to him as a fraud deserving death— absolves him of nothing. On the contrary: understanding his neutralizations pinpoints his responsibility more precisely, not less. Stain was not dragged along by a system; he chose every knife stroke and built, brick by brick, the story that allowed it. His victims were not symbols of a thesis about heroism: they were people whom a man decided he had the right to kill. The most dangerous alibi is not that of the thief who tells himself "everyone does it," but that of the murderer so convinced of his cause that he mistakes homicide for justice. That certainty is not a mitigating factor. It is the weapon.
Justice as the finest of alibis
Stain matters because he displays the most seductive form of neutralization: the one that disguises itself as an ideal. Sykes and Matza showed that inner alibis are more effective the more diffuse the victim is —that is why they flourish in fraud or piracy, where the harm seems invisible—. Stain adds an unsettling twist: when the victim is too visible, she is rewritten as guilty, and the excuse is wrapped in the banner of a noble cause. The crime committed "for justice" is the realm of the perfect alibi —the same terrain as terrorism, vigilantism and state crime, where killing is presented as duty—. The criminological lesson is not to treat every conviction as suspect, but to distrust the leap by which a legitimate ideal —wanting real heroes— turns into a license to eliminate those who fail to embody it. The distance between criticism and the blade is always bridged by an excuse one signs to oneself.
Three key takeaways
- Stain, the Hero Killer, is a living catalogue of the techniques of neutralization (Sykes and Matza, 1957): he denies the victim ("they were not real heroes"), condemns the condemners (hypocritical society is to blame) and appeals to higher loyalties (his purifying crusade).
- His fanaticism does not invert the morality of heroism: it sanctifies it. Precisely because he venerates the true hero he needs to rewrite his victims as impostors in order to kill them without feeling like a murderer. The ideology is self-exculpation raised to doctrine.
- To explain is not to excuse. The theory illuminates how he began to kill without guilt, but his sustained conviction exceeds mere neutralization and borders on moral disengagement. Understanding it pinpoints his responsibility more precisely: he chose every knife stroke.
Sources · further reading
- Sykes, G. M. & Matza, D. (1957). «Techniques of Neutralization: A Theory of Delinquency». American Sociological Review, 22(6).
- Matza, D. (1964). Delinquency and Drift. Wiley.
- Bandura, A. (1999). «Moral Disengagement in the Perpetration of Inhumanities». Personality and Social Psychology Review, 3(3).
- Maruna, S. & Copes, H. (2005). «What Have We Learned from Five Decades of Neutralization Research?». Crime and Justice, 32.
Case-file questionsFrequently asked questions
¿Quién es Stain?
Stain («el Héroe Asesino») es un villano de My Hero Academia, analizado en KRIMINIS con la lente de la criminología. He cuts the throats of professional heroes in alleyways and calls himself a purifier.
¿Por qué Stain (el Héroe Asesino) se convierte en villano?
Stain, the Hero Killer, and the techniques of neutralization of Sykes and Matza: how a moral crusade works as an inner alibi. The vigilante who kills "fake heroes" and refuses to call himself a murderer.
¿Qué teoría criminológica explica a Stain?
El caso de Stain se analiza desde la Neutralización. The techniques of neutralization (Sykes and Matza, 1957) explain how someone breaks the law without feeling like a criminal: five excuses that switch off guilt just long enough. Stain, the Hero Killer of My Hero Academia, is a walking catalogue. He murders professional heroes he judges "fake" —driven by fame or money— convinced that he is purging a corrupt society. He denies the victim ("they were not real heroes"), condemns the condemners (hypocritical society is to blame) and appeals to higher loyalties (his crusade for true justice). His ideology is not a conviction alien to common morality: it is self-exculpation raised to doctrine.
