99 Fun Facts About One Punch Man

Which artist first drew the hero Saitama in a free webcomic?

One, a pseudonymous artist, began One-Punch Man as a free webcomic with no publisher; a professional manga artist who had become a fan later offered to redraw it.

Which artist illustrates the digital manga remake of One-Punch Man?

Yusuke Murata, the artist of the remake, contacted the webcomic's creator himself after reading it and used his Shueisha connections to get the remake serialised.

Before One-Punch Man, the remake's illustrator was best known for drawing which sports manga?

Eyeshield 21, an American-football manga written by Riichiro Inagaki, ran for seven years in Weekly Shōnen Jump; as a schoolboy its artist had already won contests to design two Mega Man bosses.

What does Saitama do with a monster's torn-off seaweed hair?

Cooks it: Kombu Infinity has just beaten two heroes when Saitama, walking home from the shops, strips off its seaweed and boils it for soup stock.

On which website did the One-Punch Man manga remake begin serialisation in 2012?

Tonari no Young Jump, Shueisha's web spin-off of Weekly Young Jump magazine, launched the remake in June 2012, which makes One-Punch Man technically a seinen title.

The Japanese title of One-Punch Man is a pun on which long-running children's character?

Anpanman, the bread-headed hero of picture books since 1973, inspired the title Wanpanman, where wanpan is short for wanpanchi, a single punch.

How long is the daily run in Saitama's famous training routine?

The routine is 100 push-ups, 100 sit-ups, 100 squats and a 10 km run every single day; Genos is outraged when he hears it, insisting such ordinary training cannot explain Saitama's power.

Along with exercise and healthy food, Saitama credits his strength to going without what?

Air conditioning and heating were given up, Saitama says, to strengthen his mental fortitude; the regimen as a whole left him completely bald.

Saitama became a hero after saving a boy from which monster?

Crablante was hunting a boy who had scribbled on his body; the rescue convinced the job-hunting Saitama to become a hero, and the boy's tycoon grandfather went on to found the Hero Association.

What hero name does the Hero Association give Saitama in the anime?

Caped Baldy is the anime's rendering of his registered name Hagemanto, a jab at his bald head and plain cape; he resents it enough to join a group of heroes campaigning for new names.

When One-Punch Man begins, Saitama lives in the abandoned outskirts of which lettered city?

Z-City's deserted, monster-ridden outskirts are Saitama's first home; the Monster Association later turns out to have built its headquarters right beneath his neighbourhood.

Which pollution-spawned monster does Saitama defeat in the very first chapter?

Vaccine Man, born of the Earth's pollution, declares humanity a virus to be wiped out and dies to a single punch in the first chapter.

What persuades Saitama to let Genos move in?

Rent money: Saitama refuses to let his disciple move in until Genos offers a hefty sum, and promptly changes his mind.

Genos has sworn revenge on which destroyer of his hometown and family?

The Mad Cyborg is the rogue machine that wiped out Genos's hometown when he was fifteen; tracking it down is the reason he sought out Saitama's strength.

Which scientist rebuilt the nearly dead Genos into a machine-man?

Dr. Kuseno rebuilt the dying teenage Genos as a cyborg and continues to upgrade his parts after each destructive fight.

Genos becomes Saitama's disciple after watching him effortlessly beat which monster?

Mosquito Girl had nearly killed Genos moments earlier; Saitama flattens her with a single slap, and the awestruck cyborg begs to become his disciple.

Despite his godlike power, Saitama's poor written exam puts him in which hero tier?

C-Class is where Saitama lands after record-breaking physical results were dragged down by his written exam; heroes there are struck off after a week without a heroic deed, which sends him out hunting for crime.

After felling the Deep Sea King, how does Saitama protect the beaten heroes' reputations?

Says they wore it down: hearing the beaten heroes mocked, Saitama loudly claims he only landed the last blow, wrecking his own reputation to save theirs.

Saitama introduces himself to villains as 'just a guy who's a hero for' what?

Fun: 'I'm just a guy who's a hero for fun' is how Saitama introduces himself, and he means it, treating heroics as a hobby and registering as a professional only later.

Which cyclops-like alien, leader of the Dark Matter Thieves, comes to Earth looking for a worthy fight?

Boros roamed space because he had grown too strong for any battle to thrill him, the same complaint as Saitama's; his armour exists to hold his power back, and Saitama beats him regardless.

In One-Punch Man, which fortune-teller dies just after predicting that the Earth is in danger?

Shibabawa, a seer whose predictions had never been wrong, choked to death on a cough drop mid-prophecy; her warning is what brings the top heroes together for an emergency meeting.

The self-styled Hero Hunter Garou was expelled from whose martial arts dojo?

Bang, the hero Silver Fang, expelled Garou from his dojo after the prodigy beat up his fellow students; Garou went on to hunt heroes in turn.

Silver Fang's older brother, himself a martial-arts master, is named what?

Bomb is Silver Fang's older brother and a martial-arts master in his own right; when the hero hunts worsen, the two brothers team up to stop Garou themselves.

Which S-Class hero, hailed as the strongest man on Earth, is secretly a powerless otaku?

King earned his fearsome reputation by accident: the monster kills credited to him were Saitama's, and his facial scars came from a monster that Saitama killed.

Who is the mysterious Rank 1 S-Class hero who only appears when humanity is threatened?

Blast, the Rank 1 hero, is almost impossible to reach; the manga reveals why, showing him far from Earth with a team of allies, collecting mysterious cubes tied to a being called God.

Tatsumaki, the top-ranked female hero, goes by what hero name?

Terrible Tornado, also rendered Tornado of Terror, is the Rank 2 esper Tatsumaki; although she is 28, her small build regularly gets her mistaken for a lost child.

Which Japanese franchise does One-Punch Man's top-ranked C-Class hero parody?

Kamen Rider, the masked motorcycle-hero franchise, is the target: Mumen Rider's name means 'licenseless rider', and he pedals a bicycle instead of a motorbike.

How does S-Class hero Metal Knight, alias Dr. Bofoi, do his fighting?

With remote-controlled robots: Dr. Bofoi stays at a safe distance and sends war machines in his place; he first appears firing at the incoming meteor and rebuffing Genos's offer to team up.

Where does Child Emperor keep his battle gadgets?

Backpack: his school bag hides an arsenal of gadgets and sprouts spider-like mechanical legs; the youngest S-Class hero, aged ten, is also among the most level-headed.

What is the name of Puri-Puri Prisoner's clothes-shredding power-up?

Angel Style is the power-up Puri-Puri Prisoner enters by tearing off his clothes; the convict hero uses it against the sea monster that terrorises J-City, and loses.

Zombieman, the S-Class hero who regenerates from any wound, was a test subject of which organisation?

House of Evolution, Dr. Genus's genetics lab, made Zombieman all but unkillable; by the time he came looking for revenge, Saitama had already put it out of business.

Speed-o'-Sound Sonic, Saitama's self-declared rival, is what kind of fighter?

Ninja is Sonic's trade: trained in a hidden ninja village, he hires out as an assassin; his first fight with Saitama ended with his crotch landing on Saitama's fist.

What restores the Deep Sea King to his true form and full power?

Getting wet is what the dried-out sea monster needs: out of water he shrinks into a weakened form, and a downpour swells him back to full size mid-fight.

The Monster Association's true leader, an esper and old schoolfriend of Fubuki, is who?

Psykos let the towering Orochi act as figurehead while she ran the Monster Association through Gyoro-Gyoro, a one-eyed puppet body she operated from hiding.

Which A-Class Rank 1 hero is also a celebrity singer and actor?

Sweet Mask, a pop idol and actor, stays at Rank 1 of A-Class on purpose, so that he can block heroes he judges unworthy from rising into S-Class.

Which star fighter of the Neo Heroes is the son of Blast?

Blue fronts the Neo Heroes as their top hero, a rival organisation that lures disillusioned heroes away from the Hero Association after the Monster Association war.

Which studio animated the first season of the One-Punch Man anime?

Madhouse animated the first season to critical acclaim for its fight animation; the studio did not return, and the animation of season two drew much of that season's criticism.

Which studio took over the One-Punch Man anime from season two onwards?

J.C.Staff took over from season two in 2019, with a new director as well; reviewers criticised the animation after the switch, yet the studio stayed on to make season three.

In the first season of One-Punch Man, what does Saitama realise he has missed while fighting Carnage Kabuto?

A supermarket sale: Carnage Kabuto boasts he will rampage until next Saturday, reminding Saitama that today is bargain day, so the furious hero ends the fight with one punch and runs to the shop.

In season two of One-Punch Man, Saitama enters a martial-arts tournament disguised in what?

Wig: Saitama borrows another fighter's entry ticket and buys a wig to pass as him, but in the final a blow knocks it off and he is disqualified.

Which group performs 'The Hero!!', the opening theme of One-Punch Man's first season?

JAM Project performs 'The Hero!!'; theme-song veteran Ichirō Mizuki founded the supergroup in 2000 to make rock anthems purely for anime, tokusatsu and games, and it returned to open seasons two and three.

Who voices Saitama in the original Japanese version of One-Punch Man?

Makoto Furukawa voices Saitama, and on landing the part he admitted to worrying whether he could play a hero so strong that every fight ends in one blow.

The Paradisers, the terrorist gang led by Hammerhead, want a world where nobody has to do what?

Work: Hammerhead dresses his laziness up as a revolt against the rich, but after Saitama wrecks his stolen battle suit and its owners nearly kill him, he reforms and goes job-hunting.

One-Punch Man's season three opening, 'Get No Satisfied!', features which Japanese group?

Babymetal guests on 'Get No Satisfied!'; the group behind the first two openings broke the news itself on stage at Anime NYC in August 2025 and played its earlier One-Punch Man themes live.

Which director was announced in 2022 for Hollywood's live-action One-Punch Man film?

Justin Lin signed on with Sony in June 2022, soon after walking away from directing Fast X about a week into its shoot; the One-Punch Man film had been set up at the studio in 2020.

In the fighting game A Hero Nobody Knows, what handicap comes with picking Saitama?

A late arrival: Saitama is invincible and wins with one punch, so the game makes you survive with your other two fighters until he finally turns up.

In the 2023 Overwatch collaboration, which hero received a Saitama-inspired skin?

Doomfist, whose single devastating punch fits the part, got the Saitama skin in the March 2023 Overwatch 2 crossover; Genji became Genos and Soldier: 76 became Mumen Rider.

In the Hero Association's threat scale, which level sits directly above Demon?

Dragon sits directly above Demon on the scale Wolf, Tiger, Demon, Dragon, God; the scale is not only for monsters, since the giant meteor that Saitama shatters is rated Dragon as well.

In 2015 the One-Punch Man manga was nominated for which major American comics prize?

The Eisner Award nomination, for best US edition of international material from Asia, came in April 2015, when English readers could still get the series only digitally; print volumes followed that September.

Which other hit series comes from the creator of One-Punch Man?

Mob Psycho 100, about a psychic schoolboy, began on the Ura Sunday site in 2012, the same year the One-Punch Man remake launched, so its creator had two series running side by side.

After Saitama defeats his strongest creation, what does the scientist Dr. Genus open instead of a lab?

A takoyaki stand: beaten for good, Dr. Genus gives up on forcing human evolution and goes into the octopus-dumpling business, with his armoured gorilla as staff.

What convinced an established manga artist to commit to redrawing the One-Punch Man webcomic?

A brush with death in hospital: struck down by hives that swelled his windpipe, the artist decided that if he could die that suddenly he would spend his time drawing the webcomic he loved.

Which character is the younger sister of the S-Class esper Tatsumaki?

Fubuki long chose to stay at the top of B-Class instead of moving up to A-Class, where she felt she could never be number one; a lifetime in Tatsumaki's shadow had left its mark.

Which S-Class hero breaks off his fight with Garou the moment his little sister tells him to stop?

Metal Bat, who grows stronger the more he is hurt, has promised his sister Zenko never to show her violence, so when she walks in on the duel he stops at once, and Garou leaves too.

In One-Punch Man's first-season finale, an alien's kick sends Saitama where?

The Moon: Saitama lands on the lunar surface, then simply jumps back to Earth and crashes down onto the invaders' ship to finish the fight.

Which Super Fight champion sneers at heroes until Saitama rescues him, then vows to become one?

Suiryu, the Super Fight champion, dismissed heroics as pointless until monsters beat him to the ground and he had to cry for help; saved by Saitama, he resolves to become a hero himself.

In a dream, Saitama finally enjoys a tough fight against which invaders?

Subterraneans: in the dream they give Saitama the hard fight he craves, but when the real ones surface he kills their leader with one blow and the rest retreat.

Saitama's strongest attacks belong to which named series of moves?

Serious Series moves, such as Serious Punch and Serious Table Flip, are the attacks Saitama uses when he bothers to try; a Serious Punch ended the alien invasion arc.

Which publisher licensed the One-Punch Man manga for English release?

Viz Media ran it in its English Weekly Shonen Jump, so a series published for adult readers in Japan carries the Shonen Jump name abroad; Viz also licensed the anime.

In One-Punch Man, what reason does Saitama give when asked why he became a superhero?

For the fun of it, he says: Saitama treats saving the world as a hobby, which is why fights that end in one blow leave him so bored.

In One-Punch Man's first-season finale, the alien warlord's kick sends Saitama flying to where?

The Moon barely slows him down: Saitama leaps straight back to Earth and crashes into the invaders' ship before finishing the duel.

In One-Punch Man, the monster whose attack on a boy makes Saitama a hero mutated after doing what?

Eating too much crab turned him into Crablante, who hunted a child for drawing on his chest as he slept; stopping him gave Saitama his calling.

Mid-fight with the monster Carnage Kabuto in One-Punch Man, what does Saitama panic about missing?

A supermarket sale is the one thing that rattles him: he flattens Carnage Kabuto in a fury and sprints off to the shop with Genos.

What does One-Punch Man's Saitama smash to save his city, only to be blamed for the debris?

A falling meteor shatters under his blow, but the fragments wreck the streets below and two rival heroes stir up a crowd against him.

In One-Punch Man, what did Saitama lose for good as the price of gaining his unbeatable power?

His hair fell out as his strength arrived, and only one old acquaintance, rescued by him years earlier, remembers what it looked like.

After Saitama beats his creations in One-Punch Man, Dr. Genus opens what kind of business?

A takoyaki stand replaces the lab once Genus abandons his research, and his surviving creation Armored Gorilla helps him run it.

After One-Punch Man changed studios for its second season, what did reviewers criticise above all?

The animation quality fell so far that IGN called the season mediocre, even as critics kept praising the story, humour and characters.

The shaven-headed Paradisers gang in One-Punch Man riots to demand that no citizen need do what?

Work for a living is what leader Hammerhead simply cannot face, yet after Saitama spares him he is seen filling in a job application.

How does Genos, Saitama's eager disciple, secure a place in his master's apartment in One-Punch Man?

By paying rent upfront: a sizable down payment on his share turns the top-tier newcomer into the roommate of a hero ranked far below him.

On One-Punch Man's disaster scale, which animal names the lowest level a monster can be given?

Wolf is the bottom rung, for a threat that is merely dangerous, while Tiger sits one step higher for one that could cost many lives.

As a boy, One-Punch Man's Hero Hunter Garou came to see popular heroes as no better than what?

Bullies who gang up on the weak was his verdict on heroes, formed when a classmate tormented him and labelled him the monster.

In One-Punch Man, what happens to a bottom-tier hero who goes a whole week without a heroic deed?

Being dropped from the registry is the penalty, which sends a newly enrolled Saitama dashing around town in search of any crook to stop.

In the One-Punch Man manga, what does a beaten Garou teach Saitama to save the fallen heroes?

Time travel lets Saitama go back and stop Garou before the massacre begins, leaving Genos as the only one who recalls the erased timeline.

One-Punch Man's first two English volumes debuted at one and two on which publication's manga chart?

The New York Times list held both books for a fortnight, and volume one went on to log 71 weeks on it.

Which top-tier One-Punch Man hero grows stronger as he is hurt and dotes on his sister Zenko?

Metal Bat runs on fighting spirit, hitting harder with every injury, and only Zenko stepping in halts his brawl with Garou.

One-Punch Man's Hero Association was founded after a stranger saved which relative of its founder?

His grandson was the child Saitama pulled from a monster's claws, so the unnamed bystander inspired the very body that later underrates him.

Which One-Punch Man fighter had won four straight Super Fight titles before facing Saitama?

Suiryu takes the trophy only because Saitama is disqualified, and after monsters storm the arena he gives up thrill-seeking to become a hero.

Which hulking figurehead fronts One-Punch Man's Monster Association for its hidden true leader?

Orochi was once a human combat prodigy, reshaped by experiments until he could absorb his opponents and take on their powers.

Which top-tier One-Punch Man hero at first refuses to shake Saitama's hand because of his low rank?

Atomic Samurai will not greet anyone outside the top rank, and when Saitama calls him middle-aged he snaps back that he is just 37.

What does the school backpack of One-Punch Man's boy genius Child Emperor sprout to carry him?

Spider-like legs unfold from the satchel, one of many gadgets from a prodigy who once assisted the scientist Dr. Bofoi.

How does the genetic scientist Dr. Genus find assistants for his research in One-Punch Man?

With clones of himself, each ready to take over should he die; he had already reversed his own ageing at 70.

What turns the bodybuilder Marugori into a city-crushing giant in One-Punch Man's opening episode?

An enlargement drink brewed by his scientist brother Fukegao does it, and the new giant promptly crushes Fukegao by accident.

Which lettered metropolis is flattened by aliens while One-Punch Man's top heroes meet there?

A-City is wiped out in moments by the invaders' ship, and a celebrity hero later scolds the top rank for letting it happen.

Which faceless entity grants Garou cosmic power late in One-Punch Man's Monster Association saga?

God appears as a wrinkled giant with no face, wants humanity wiped out, and can take the shape of someone its target holds dear.

Which colossal regenerating monster does Saitama destroy in One-Punch Man's second-season finale?

Elder Centipede heals from every wound the veteran fighters inflict, then charges at a hero bluffing through a megaphone, straight into Saitama's path.

Which Hollywood studio announced a live-action One-Punch Man film in 2020, with Avi Arad producing?

Columbia Pictures, Sony's film studio, first hired screenwriters Scott Rosenberg and Jeff Pinkner to adapt the bald hero's story.

Which lonely boy, never without his hero guidebook, is befriended by Garou in One-Punch Man?

Tareo is a loner picked on by classmates, and Garou tells him that being strong is the way to make it stop.

The monster Phoenix Man in One-Punch Man was created when what fused permanently with his body?

His character costume stayed on after the actor was sacked and his show cancelled, and he wore it so constantly that it became his body.

What must heroes crush inside each head of the alien Melzargard to kill him in One-Punch Man?

A marble-sized core hides in every head, and he keeps regenerating until the last is crushed, having already severed a swordsman's forearm.

Who voices Saitama's disciple Genos in the English-language dub of the One-Punch Man anime?

Zach Aguilar plays Genos in English, while Kaito Ishikawa voices him in the original Japanese version.

Which hero lectures new recruits Saitama and Genos in One-Punch Man, then tries to beat up Saitama?

Snakebite Snek fumes when the pair ignore his welcome seminar, tries to crush the rookie afterwards and is floored at once.

Why does gang leader Hammerhead survive a knife to the back of his head in One-Punch Man?

His thick skull stops the blade thrown by a hired assassin, and he flees straight into Saitama, who wrecks his stolen battle suit but lets him go.

Which One-Punch Man official tries to recruit criminals as heroes, only for Garou to gatecrash?

Sitch chairs the committee that prepares for prophesied disasters, and Garou beats everyone else in the room but spares him to carry the message.

What weapon does the lollipop-chewing hero Golden Ball use to fire his shots in One-Punch Man?

A slingshot launches golden pellets of a special alloy that morph into bullets, and the anime version even adds a laser sight.

How does Speed-o'-Sound Sonic's first attack on Saitama in One-Punch Man come to a humiliating end?

His groin hits a fist by pure accident as he leaps in, and the mortified assassin vows to come back and beat Saitama.

Why do the Monster Cells that Speed-o'-Sound Sonic eats in One-Punch Man fail to transform him?

He cooked them first, which ruined their power; he had only accepted the gift from two former comrades for his own gain.

When Speed-o'-Sound Sonic first appears in One-Punch Man, what is his job for the tycoon Zeniru?

Bodyguard duty means wiping out the Paradisers gang for his employer, and he mistakes Saitama for one more of its bald members.

Who voices Speed-o'-Sound Sonic, Saitama's would-be rival, in the Japanese One-Punch Man anime?

Yūki Kaji voices the speedy assassin in Japanese, with Erik Scott Kimerer taking the part in the English dub.

Which top-tier One-Punch Man hero grew up in the same secret village as Speed-o'-Sound Sonic?

Flashy Flash and Sonic were childhood friends there, and Flash spared him out of respect for that friendship when the village fell.