One-Punch Man

10 Worst Episodes of One-Punch Man

Saitama is a hero who only became a hero for fun. After three years of “special” training, though, he’s become so strong that he’s practically invincible. In fact, he’s too strong — even his mightiest opponents are taken out with a single punch, and it turns out that being devastatingly powerful is actually kind of a bore. With his passion for being a hero lost along with his hair, yet still faced with new enemies every day, how much longer can he keep it going?

Written by Sophie and last updated on feb 12, 2023.

PS: The following content contains spoilers!

PPS: I will admit that parts of this page was written with the help of AI - it makes my work so much easier to not start from a blank page!

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One-Punch Man - S1E8

#10 - The Deep Sea King (Season 1 - Episode 8)

A pack of monsters calling themselves the “Clan of the Seafolk” arrive on the shores of City J intent on invading the land. When the hero sent to fight them is defeated easily by the Deep Sea King himself, Saitama and Genos head for the city to help.

The episode was rated 7.94 from 1149 votes.

One-Punch Man - S2E8

#9 - The Resistance of the Strong (Season 2 - Episode 8)

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Goketsu, the first Super Fight Tournament champion, arrives in the stadium. Having now become a monster, he’s aiming to force the Super Fight competitors to turn into monsters themselves. When several do, it’s up to Suiryu to take them on alone.

The episode was rated 7.94 from 795 votes.

One-Punch Man - S1E1

#8 - The Strongest Man (Season 1 - Episode 1)

Saitama is a guy who’s a hero for fun. After saving a child from certain death, he decided to become a hero and trained hard for three years. Though he’s now so strong he can defeat any opponent with a single punch, lately he feels as if, in exchange for overwhelming power, he’s lost something even more important.

The episode was rated 7.86 from 1652 votes.

One-Punch Man - S1E6

#7 - The Terrifying City (Season 1 - Episode 6)

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It’s been five days since Saitama became a professional hero and he has yet to do anything heroic. When Genos informs him that C-class heroes who don’t fight bad guys are dropped from the hero registry after a week of inaction, Saitama heads out on patrol, yet can’t find any criminals or monsters to stop.

The episode was rated 7.83 from 1148 votes.

One-Punch Man - S2E1

#6 - Return of the Hero (Season 2 - Episode 1)

Saitama is out shopping with Genos in tow when the pair come across G4, a demonic robot on a mission to eliminate King. Elsewhere, Sitch attempts to recruit various cutthroats, villains and assassins of the underworld to help the Hero Association.

The episode was rated 7.77 from 958 votes.

One-Punch Man - S2E9

#5 - The Troubles of the Strongest (Season 2 - Episode 9)

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Just as Suiryu finds himself in the depths of despair, Saitama suddenly appears to help him out. But despite all Saitama’s strength, there’s still something bugging the hero that he just can’t seem to shake.

The episode was rated 7.71 from 787 votes.

One-Punch Man - S2E6

#4 - The Uprising of the Monsters (Season 2 - Episode 6)

The Super Fight tournament kicks off while Genos takes on multiple monsters who have appeared in City C. Elsewhere, countless monsters are wreaking havoc in multiple areas, but the Hero Association is being overwhelmed by the sheer number of threats.

The episode was rated 7.69 from 778 votes.

One-Punch Man - S2E4

#3 - The Metal Bat (Season 2 - Episode 4)

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Assigned to guard a VIP and his son, Metal Bat couldn’t be less thrilled. But when the group is suddenly attacked all hell breaks loose. Meanwhile, Saitama has disguised himself as Charanko in order to enter the “Super Fight” martial arts tournament.

The episode was rated 7.60 from 788 votes.

One-Punch Man - S2E10

#2 - Justice Under Siege (Season 2 - Episode 10)

The Monster Association issues a challenge to the Hero Association, telling them they have only three days to rescue the hostage Waganma. Elsewhere, Garou tries to recover from his constant fighting, but things don’t quite go as planned.

The episode was rated 7.55 from 753 votes.

One-Punch Man - S2E5

#1 - The Martial Arts Tournament (Season 2 - Episode 5)

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Monsters from the Monster Association launch simultaneous attacks on all the human cities, attempting to overwhelm the forces of the Hero Association. Meanwhile, the “Super Fight” martial arts tournament kicks off.

The episode was rated 7.45 from 788 votes.

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