5 iconic moments · verified episode numbers · no spoiler ratings
Saitama defeats a giant crab monster with a single casual punch in his sleep. The protagonist's power is established immediately: he is simply unbeatable. The comedy and existential dread of his situation begin in the same moment.
Genos unleashes his full power against Mosquito Girl and is overpowered. Saitama crushes her with an absent-minded swat. Genos witnesses what Saitama truly is and asks to become his disciple on the spot.
The alien warlord Boros arrives claiming he crossed the universe to find a worthy opponent. Saitama lets him fire his ultimate attack — then punches him so hard he almost knocks him to the moon. The most powerful alien challenger is defeated at Saitama's serious, not full, power.
The Hero Association test reveals Saitama's physical stats are literally off their charts — the highest scores ever recorded. He is registered as C-rank because he failed the written test. The system refuses to recognise genuine power.
Garou, a martial arts prodigy who idolises monsters and hates heroes, begins systematically hunting and defeating S-Class heroes. The Monster Association arc's central conflict takes shape.
Episode numbers are verified against the aired broadcast order. One Punch Man is the property of its respective creators and studios.