King is the S-Class Rank 7 hero known throughout the Hero Association and the public as "the strongest man on Earth" — a reputation built entirely on other people's actions. In reality, King is an ordinary human with no combat ability whatsoever; his legend began purely by coincidence, when he happened to be standing nearby as other heroes, including Saitama defeating Vaccine Man, took down major threats, and got credited for it instead.
His signature "ability," the King Engine, isn't a power at all — it's the psychological weight of his reputation, an aura of fear so absolute from his name alone that enemies sometimes collapse or flee before he does anything at all. By his own admission, King is really just an unemployed, socially awkward otaku living alone in his M-City apartment, with a passion for video games — including dating sims — and a self-professed cowardice that makes the gap between his myth and his reality one of the series' running jokes. He maintains the deception mostly by staying quiet and letting the Association's assumptions do the rest.
King is a tall man with a rugged, intimidating face — a long, sharp jawline and slicked-back sandy-blond hair. His most defining feature is a set of three vertical scars over his left eye, left behind by a monster attack years before the story starts.
He’s usually seen in plain, casual clothes — a plaid or checkered long-sleeved shirt and dark trousers — or, when he’s trying to move through public spaces unnoticed, a hooded sweatshirt and baseball cap. His “battle-ready” expression that terrifies monsters is actually just fear-induced sweat and stress.
King is anxious, cowardly, and humble almost out of necessity — to everyone else, he reads as stoic, aloof, and merciless. All he really wants is a quiet life where he can play video games uninterrupted. Underneath the fear, though, he’s got a genuinely sharp philosophical mind and a habit of dropping wisdom he picked up from manga, and he’s a legitimate world-class grandmaster when it comes to gaming.
What he doesn’t have is any actual combat ability, speed, or durability beyond an average middle-aged man. He believes he’s a “worthless stone” and a fraud, though Saitama has pushed him to see his reputation as “everyone’s hero” as a burden he has to grow into rather than run from. He started out hiding in his apartment to dodge hero duty, but by the end of the Monster Association war he’d become proactive enough to actively go looking for real training.
King’s legend was born about three years before the story starts, when he happened to be present on five separate occasions when Saitama quietly defeated powerful monsters and left the scene before anyone official arrived. The Hero Association assumed King was responsible each time. His signature facial scars came from one of those encounters, an attack by Octopus Claw Man — Saitama saved his life, but King was too traumatized in the moment to correct the record once the Association credited him with the win.
Before any of that, he was just a self-described troublemaker who found real peace in video games.
The G4 Incident
Confronted in the street by the robot G4, who demanded a duel. King stalled by claiming he needed the bathroom and tried to make a run for it — Saitama intercepted and quietly handled G4 himself.
The Truth Comes Out
Saitama followed him home and discovered his actual secret: an obsession with the romance game Heartthrob Sisters. King broke down and admitted he’s a powerless coward. Saitama took it in stride, and the two became friends.
Alien Invasion
Sat in on the Class S emergency meeting but skipped the actual surface battle, on the reasoning that there was no way to attack the ship from the ground.
Monster Association Raid
Navigated the underground base and ran into the hostage Waganma, scaring off multiple monsters through reputation alone without lifting a finger. On the surface, he stood completely alone against four executives — Black Spermatozoon, Homeless Emperor, Evil Mineral Water, and Golden Spermatozoon — and stopped them cold just by crossing his arms and letting his “King Engine” rumble. They were too afraid of his supposed “Ultimate Hellfire Wavemotion Cannon” to make a move.
Post-War Training
Weighed down by his own fraudulence, King went looking for real training from Bang and other martial arts masters. It didn’t work — his reputation was so overwhelming that every master assumed he was already too strong to teach, and read his pleas for help as some kind of test.
The King Engine
A loud, rhythmic thumping that kicks in whenever King goes into “battle mode.” It’s actually just his heart pounding from sheer terror — monsters read it as a terrifying aura.
Supreme Intimidation
His mere presence makes opponents overthink everything, often talking themselves into surrendering or retreating over threats that don’t actually exist.
Video Game Mastery
A genuinely unbeatable gamer — he can beat Saitama with ease even using “weak” characters or self-imposed handicaps.
Luck
An almost supernatural knack for being exactly where Saitama needs to save him, or for random coincidence to line up in a way that looks like his own doing.
“Techniques” (Fictional)
The Ultimate Hellfire Wavemotion Cannon and Super Sparking King Mode don’t actually exist — but the Monster Association’s executives believed in them completely.
vs. G4 — Ch. 38
The robot challenged him to a duel to collect data on the “strongest hero.” King excused himself to the bathroom and never came back — the stall that led directly to Saitama discovering his secret.
vs. Monster Association Executives — Ch. 156–160
Stood alone on a pile of rubble facing four Dragon-level executives. Held them off through pure intimidation until Saitama and the others arrived — his single greatest display of “bravery,” with zero actual combat ability behind it.
vs. Atomic Samurai — Ch. 186–187
Challenged to a test of skill cutting an apple. Too terrified to even draw the sword, he set it down and walked away — Atomic Samurai walked away convinced King had sliced the apple, and the air around it, so fast that neither noticed it happened.
Major: Ch. 38, 39, 108, 109, 110, 136, 156, 157, 186, 187, 190, 191.
Minor: Ch. 32, 41, 46, 48, 49, 78, 83, 85, 93, 107, 128, 131, 135, 142, 145.
Mentioned only: Ch. 43, 44, 47, 68, 92, 122, 132, 230, 235.
Saitama
His best friend and only real confidant — they spend most of their downtime playing video games, and King is the only person who can consistently beat Saitama at anything.
Genos
Genos treats King’s reputation with total sincerity, reading his simple, fear-driven actions as deep tactical genius. King, for his part, is quietly terrified of the cyborg.
Atomic Samurai
Considers King a “monster swordsman” after the apple incident — where King was really just too scared to draw his sword.
Bang (Silverfang)
King respects him and sought him out for real training. Bang, convinced King is already at the peak of martial arts, believes there’s nothing left he could possibly teach him.
Tatsumaki
Rare for her — she actually shows King professional respect, once calling his decision to escort a hostage to safety a “wise decision.”
Metal Bat
Sees King as a “modest” hero and trusts him completely to handle dangerous situations solo.
Fubuki
Desperate to recruit him into the Blizzard Bunch, and endlessly baffled that a Class S hero would rather “hang out” with a Class B hero like Saitama.
The Hero Association
Treats him as their ultimate trump card and an indispensable asset for keeping public order.
“I’m just out shopping.”
“Is it fun being a hero who lies and cringes in fear?”
“A hero shouldn’t fight for personal fulfillment... a hero fights to help others and save the world!”
“I am the monster swordsman... he acts with such steel.” — Atomic Samurai, describing King
He’s 29 years old, and went by the gaming handle “King” as an undefeated tournament champion before he ever became a hero. Hero Association analysts theorize his total lack of combat data means he “renders monsters unconscious without touching them.” He’s beaten Saitama 1,525 times in video games — Saitama has zero wins — and does it casually, sometimes with self-imposed handicaps or absurd combos, sighing the whole time out of boredom.
🇯🇵 Japanese Voice Actors
Brown, Rich
🇯🇵 Japanese
Yasumoto, Hiroki
🇯🇵 Japanese