One Punch Man Trivia
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99 free One Punch Man trivia questions with answers — entertainment quiz, new questions added Oct 2026.
One Punch Man trivia for anyone who has done the 100 push-ups, 100 sit-ups, 100 squats and 10 km run - or at least thought about it. The quiz covers Saitama and Genos, the S-Class heroes from Blast and Tatsumaki to King and Puri-Puri Prisoner, and the villains they face: Vaccine Man, Mosquito Girl, the Deep Sea King, Boros, Garou and the Monster Association. It also goes behind the series: One's original 2009 webcomic and the pun in its Japanese title, how a hospitalised Yusuke Murata came to redraw it, the Madhouse first season and the criticised J.C.Staff second, JAM Project's openings, the voice actors, the games, the Overwatch crossover and the long-gestating live-action film. Difficulty runs from easy questions any anime viewer can answer to expert questions for readers of the manga. Every answer has been checked against a reference page and each question shows its source once you have answered.
30 of 99 questions with answers and explanations. Play the quiz
Q 01Which artist first drew the hero Saitama in a free webcomic?
One
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.
Q 02Which artist illustrates the digital manga remake of One-Punch Man?
Yusuke Murata
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.
Q 03Before One-Punch Man, the remake's illustrator was best known for drawing which sports manga?
Eyeshield 21
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.
Q 04What does Saitama do with a monster's torn-off seaweed hair?
Cooks it
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.
Q 05On which website did the One-Punch Man manga remake begin serialisation in 2012?
Tonari no Young Jump
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.
Q 06The Japanese title of One-Punch Man is a pun on which long-running children's character?
Anpanman
Anpanman, the bread-headed hero of picture books since 1973, inspired the title Wanpanman, where wanpan is short for wanpanchi, a single punch.
Q 07How long is the daily run in Saitama's famous training routine?
10 km
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.
Q 08Along with exercise and healthy food, Saitama credits his strength to going without what?
Air conditioning
Air conditioning and heating were given up, Saitama says, to strengthen his mental fortitude; the regimen as a whole left him completely bald.
Q 09Saitama became a hero after saving a boy from which monster?
Crablante
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.
Q 10What hero name does the Hero Association give Saitama in the anime?
Caped Baldy
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.
Q 11When One-Punch Man begins, Saitama lives in the abandoned outskirts of which lettered city?
Z
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.
Q 12Which pollution-spawned monster does Saitama defeat in the very first chapter?
Vaccine Man
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.
Q 13What persuades Saitama to let Genos move in?
Rent money
Rent money: Saitama refuses to let his disciple move in until Genos offers a hefty sum, and promptly changes his mind.
Q 21In One-Punch Man, which fortune-teller dies just after predicting that the Earth is in danger?
Shibabawa
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.
Q 22The self-styled Hero Hunter Garou was expelled from whose martial arts dojo?
Bang
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.
Q 23Silver Fang's older brother, himself a martial-arts master, is named what?
Bomb
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.
Q 14Genos has sworn revenge on which destroyer of his hometown and family?
Mad Cyborg
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.
Q 15Which scientist rebuilt the nearly dead Genos into a machine-man?
Dr. Kuseno
Dr. Kuseno rebuilt the dying teenage Genos as a cyborg and continues to upgrade his parts after each destructive fight.
Q 16Genos becomes Saitama's disciple after watching him effortlessly beat which monster?
Mosquito Girl
Mosquito Girl had nearly killed Genos moments earlier; Saitama flattens her with a single slap, and the awestruck cyborg begs to become his disciple.
Q 17Despite his godlike power, Saitama's poor written exam puts him in which hero tier?
C-Class
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.
Q 18After felling the Deep Sea King, how does Saitama protect the beaten heroes' reputations?
Says they wore it down
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.
Q 19Saitama introduces himself to villains as 'just a guy who's a hero for' what?
Fun
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.
Q 20Which cyclops-like alien, leader of the Dark Matter Thieves, comes to Earth looking for a worthy fight?
Boros
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.
Q 24Which S-Class hero, hailed as the strongest man on Earth, is secretly a powerless otaku?
King
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.
Q 25Who is the mysterious Rank 1 S-Class hero who only appears when humanity is threatened?
Blast
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.
Q 26Tatsumaki, the top-ranked female hero, goes by what hero name?
Terrible Tornado
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.
Q 27Which Japanese franchise does One-Punch Man's top-ranked C-Class hero parody?
Kamen Rider
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.
Q 28How does S-Class hero Metal Knight, alias Dr. Bofoi, do his fighting?
With remote-controlled robots
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.
Q 29Where does Child Emperor keep his battle gadgets?
Backpack
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.
Q 30What is the name of Puri-Puri Prisoner's clothes-shredding power-up?
Angel Style
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.