The universe of One Punch Man is home to a plethora of valiant heroes united under the banner of the esteemed Hero Association. However, where there are heroes, there are also malevolent villains lurking in the shadows, challenging the very fabric of justice.

From enigmatic beings of the Monster Association to ruthless assassin clans and enigmatic solo operators, the heroes in One Punch Man are constantly pitted against characters embodying pure malevolence, showcasing the darkest facets of their world. Here are some of the most nefarious figures in the series:

10 Do-S

An Enigmatic Sadist With a Vicious Streak

Do-S exudes an aura of sadistic dominance, relishing in the suffering of her victims. This enigmatic being possesses the terrifying ability to ensnare and manipulate minds with her whip, compelling individuals to turn against their allies at her whim.

9 Nyan

A Feline Fiend Driven by Malice

Nyan, once a domestic cat subjected to unwanted affection, metamorphosed into a malevolent monster fueled by disdain for love. This arrogant bully delights in tormenting and toying with opponents before delivering a fatal blow, showcasing a cruel streak matched only by his cowardice.

8 Carnage Kabuto

The Delusional Herald of Evolution

Carnage Kabuto, a formidable antagonist, deludes himself as the epitome of evolution, devoid of human empathy. His rampage, fueled by a superiority complex, embodies chaos and destruction, threatening all in his path until a fateful encounter with Saitama halts his reign of terror.