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Hamukichi (ハムキチ, Hamukichi) is a Martial Artist and user of the Sunflower Dojo's Gentle Self Defense. He ran a dojo to teach women and children self-defense.

After eating a monster cell, offered by Gouketsu, Hamukichi became a Mysterious Being and a member of the Monster Association.


Hamukichi's previous appearance as a human.

Hamukichi is a very muscular man, with many scars on his body and face. His hair is light with two small buns on each side. He has a full beard and a perpetual blush on his cheeks. He wears light shorts with hamster prints on it, and dark leg warmers, wrist bands & belt.

After eating a monster cell and becoming a Mysterious Being, his appearance changed drastically. He appears as an anthropomorphic feral bear-like beast with light-colored fur that grows over his entire body and develops razor-sharp teeth. In stark contrast to his previous appearance, his eyes are now completely open but his pupils disappeared, yet he still maintains the blush on his cheeks and the scar on his head. He also has the kanji for "eat" (食む, hamu) written on his chest.


Despite his benevolent appearance and personality, he is a miserable man whose lack of stable income from his dojo made him willing to trade his humanity for power in order to live the life he always wanted.

After becoming a monster, he seems to have lost any form of intellect, acting more like an wild animal than a person. It appears like The Three Crows, if the person who eats monster cells doesn't have a strong enough will, they will lose their minds.


Human Monster Saga[]

Monster Raid Arc[]

Hamukichi is participating in the Super Fight Tournament in C-City at the C-City Super Stadium. This is the first time Hamukichi has participated in the tournament.[1] While watching the match between Max and Suiryu, he was shocked by the strength of the latter, easily defeating his opponent.[2]

He was defeated by Gatlin after getting hit by his Ultra High-Speed Barrage, despite injuring his opponent greatly.[3]

Super Fight Arc[]

Hamukichi was later present at the closing ceremony, when it was suddenly interrupted by The Three Crows and Gouketsu, who threatens to kill them unless they become monsters.[4] He decided to eat the Monster Cells and became a monster to escape his miserable life as a low-income martial arts instructor.[5] He was defeated by Suiryu with an elbow to the face.[6]

Abilities and Powers[]

Not much is known about Hamukichi's strength. He managed to injure Gatlin, but was still overpowered by the powerful combo of the martial artist. After becoming a monster, his strength increased to the point to impress even Gouketsu, while the latter even looked down on the strongest fighters of the tournament, though he was still no match for Suiryu.

Fighting Style[]

Sunflower Dojo's Gentle Self Defense (ひまわり道場の優しい護身術, Himawari Dōjō no Yasashī Goshin-jutsu): Not much about this style was shown but, it is claimed to be formidable enough to inflict heavy injuries to a strong fighter like Gatlin.

Major Battles[]

Participants Chapter(s) Episode(s) Result
Hamukichi vs. Gatlin (Off screen) 63 18 Loss
Hamukichi, Benpatsu, Choze and Volten vs. Suiryu 72 20 Loss


  • The cost of attending his dojo is 2000 yen a month.


  1. One-Punch Man Manga; Chapter 60, page 5
  2. One-Punch Man Manga; Chapter 62, page 15
  3. One-Punch Man Manga; Chapter 63, page 16
  4. One-Punch Man Manga; Chapter 71, page 33-42
  5. One-Punch Man Manga; Chapter 72, page 21-25
  6. One-Punch Man Manga; Chapter 72, page 29


Martial Artists
Heroes BangMaxSneck
Unaffiliated BazuzuBombCharankoDaveGatlinJakumenLin LinMentaiSour FaceSuicho SuikoSuiryuZakos
S-Class Gale WindHellfire FlameSpeed-o'-Sound Sonic
B-Class Hyaha Axe
Ex-Villains Dr. GenusHammerheadMen's Esthetician Man
Undetermined Class
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 *