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Haragiri (ハラギリ, Haragiri) was a swordmaster and a member of the Council of Swordmasters before deciding to join the Monster Association. He was killed by Atomic Samurai.[2]


Haragiri as a human

As a human, he had his long dark hair slick back and a prominent widow peak. He appeared to be a middle-aged man, around 40 years old. His attire consisted of a sleeveless haori over his kimono. He carried a katana sheathed away in a scabbard found on the left side of his hip. When in his monster form, his skin became darker and a third eye appeared on his forehead. His teeth became sharper and his hair turned lighter in color. Additionally, it appeared that his hair turned into large vines that stuck out, and several veins pulsed across his skin.


Haragiri was a very blithe individual who was mostly concerned about improving his swordsmanship. He believed the sole purpose of the Council of Swordmasters is to improve their swordsmanship, and that anything else, such as meetings about the hero hunter Garou, were irrelevant and distracted them from their original mission. In exchange for his lust for power, he completely abandoned his humanity and joined the Monster Association. After becoming a Mysterious Being, he became very arrogant, as he believed that he could easily kill all the other members of the Council of Swordmasters, including Atomic Samurai, whom is one of the highest-ranked S-Class heroes.


Human Monster Saga[]

Super Fight Arc[]

Kamikaze slashes Haragiri to pieces

During the meeting of the Council of Swordmasters, while Atomic Samurai was thanking the other members for their support in chasing down the "Human Monster", Garou, Haragiri interrupts Atomic Samurai and reveals that he joined the Monster Association who offered, in return for giving up his humanity, a power far beyond that which he currently possessed. He agreed and ingested a Monster Cell, turning himself into a mysterious being.

During the meeting of the Council of Swordmasters, he threatened to kill all members unless they ate one of the Monster Cells and "monsterize" themselves. He was about to kill Atomic Samurai regardless, as he was a target of the Monster Association, after giving them 3 seconds to eat one of the Monster Cells. He prepares to slash the hero's neck, but before his blade could reach the hero, Atomic Samurai had already unsheathed his sword and cut him into pieces with his Atomic Slash, ending the monster's life.[3]

Abilities and Powers[]

Haragiri was a member of the Council of Swordmasters while human and thus had masterful and high skills in swordsmanship. Before becoming a Mysterious Being, he was capable of drawing sword at the speed surpassed the speed of sound.[4] His transformation into a Mysterious Being furthermore greatly heightened his strength and speed.[5] Despite his considerable increase in power, he was no match to the likes of Atomic Samurai.

Physical Abilities[]

Haragiri begins to transform

Transformation: Haragiri gained the ability to transform his physical form after becoming a monster, as he ate a monster cell prior to the meeting with the Council of Swordmasters, yet only when presenting them to the other members did he reveal his monster form.

Immense Speed and Reflexes: Prior to his transformation into a monster, Haragiri claimed he could draw his sword at speeds faster than sound.[4] After his transformation, this already astonishing speed was increased even further, yet he still wasn't nearly fast enough to react to Atomic Samurai.

Enhanced Strength: Due to the fact that he was a member of the Council of Swordmasters, it can be assumed that he had impressive strength, which only increased following his transformation.

Fighting Style[]

Master Swordsman: As a member of the Council of Swordmasters, Haragiri was undoubtedly a very skilled and powerful swordsman; though he was completely outmatched by Atomic Samurai.


Katana: Haragiri was shown to possess a katana.

Miscellaneous Abilities[]

Longevity: Like any human who had eaten a monster cell, Haragiri gained a longer life span.[6]

Major Battles[]

Participants Chapter(s) Episode(s) Result
Haragiri vs. Atomic Samurai 69 19 Haragiri is killed


  • "Haragiri" is similar to the word harakiri, a ritual suicide originally performed by samurai. This is probably a reference to how he let his human self die in exchange for greater power as a monster.
  • Haragiri is among the few monsters of human origin who can access their human form, the others being Gale Wind, Hellfire Flame and Surprise-Attack Plum.


  2. One-Punch Man Manga and Anime; Chapter 69, and Episode 19
  3. One-Punch Man Manga; Chapter 69, page 13-25
  4. 4.0 4.1 One-Punch Man Manga; Chapter 69, page 20
  5. One-Punch Man Manga; Chapter 69, page 17
  6. One-Punch Man Manga and Anime; Chapter 69, page 16, and Episode 19


Monster Association
Executives Black Sperm *Evil Natural Water *Homeless Emperor Fuhrer Ugly Gums Overgrown RoverNyan Elder Centipede Gouketsu 
Demon Awakened Cockroach Baquma Bug God Building Booper Devil Long Hair Do-S *Eyesight G5 Hundred-Eyes Octopus Vampire (Pureblood) Rafflesidon Royal Ripper Face Ripper Fist Fight Djinn Free Hugger Rhino Wrestler The Three Crows Senior Centipede Showerhead Super Mouse Unihorn The Great Food Tub 
Unknown Gyoffrey Goddess Glasses Venus Mantrap Junior Centipede Haragiri Rosie Choze Benpatsu *Hamukichi *Volten *Evil Eye Gale Hellfire Evil Eggs ManakoPlatinum Sperm Sword Devil Executioner Raptora *Reptera
Mysterious Beings
Dragon (or higher) Boros Orochi *
Demon 170,000-Year-Old Cicada Larva 170,000-Year-Old Cicada Adult Armored GorillaAwakened Cockroach Baquma Beast King Bruinado Bug God Building Booper Deep Sea King Demonic Fan Devil Long Hair *Do-S *Eyesight Face Ripper Fist Fight Djinn Free Hugger G4 G5 Game-Berus Giant Crow Grizzly Nyah Hundred-Eyes Octopus Jumping Spider Macho Daikon Mosquito Girl Rafflesidon Rhino Wrestler Royal Ripper Scaledon Senior Centipede Showerhead Sky King Subterranean King Super Mouse Surprise-Attack Plum The Great Food Tub The Three Crows Unihorn Vampire (Pureblood) 
Wolf Himawari Hotdog Messenger of the Seafolk Piggy Bancon Tongue Stretcher
Less than Wolf
Unknown Alien Seer *Ancient King Angry Grandpa Autumn Phantom Red Golden-ringed Dragonfly *Benpatsu *Choze DarkDark Matter Gunner Eagle Enamel Evil Eggs Evil Eye Evil Natural Water *Falcon Fish of DarknessGale Giant Salamander Gigakigan Goddess Glasses Gyoffrey Hamukichi *Haragiri Hawk Hellfire Junior Centipede Kite Lord Great White ManakoMen's Esthetician Man *Platinum Sperm Rosie Raptora *RepteraSage Centipede Suppon Sword Devil Executioner Venus Mantrap Volten *