One-Punch Man Wiki

Game-Berus (ガメベロス, Gameberosu, Viz: GameBeros) was a Mysterious Being who attacked the first Hero Costume Contest. It was killed by Saitama.[1]


Game-Berus was a giant sentient turtle-like creature who had three heads and a shell, characterised by a muddy green-ish color. It could stand on its hind legs.


Game-Berus was originally a turtle. When its owner flushed it down the toilet, into the sewers, it transformed into a monster after bathing in sewage.


Not much is known about it, but it seemed determined to drown humans in sewer water.

Appearances in Other Media[]



Game-Berus interrupts a hero costume contest before Saitama can get a final verdict. After easily defeating B-Class and C-Class heroes, it declares that it will drown humans in sewer water. It is then defeated by a punch from Saitama after charging at the judges.

Power and Abilities[]

As a Demon-level threat, Game-Berus was quite powerful. A group of C and B-Class heroes were unable to do anything against it and the S-Class hero Genos even praised the monster after Saitama killed it, claiming Game-Berus wasn't weak.

Physical Abilities[]

Enhanced Durability: Game-Berus had a very tough shell and skin, as the B-Class hero Darkness Blade was not able to deal any damage to it.

Saitama stops Game-Berus

Enhanced Strength: Game-Berus had enough strength to effortlessly smack aside various C and B-Class heroes, including Darkness Blade whose armor was easily broken with a single hit.

Spherical Form: Game-Berus could roll into a ball to attack others with greater speed and power than his regular strikes.


  • His name is a portmanteau of the Japanese word for turtle (kame) and Cerberus, the three headed dog that guards the underworld in Greek mythology, and the classic Daiei movie monster "Gamera".


  1. One-Punch Man Omake; Taste


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 Bug God Building Booper Deep Sea King Demonic Fan Devil Long Hair *Do-S *Face Ripper Fist Fight Djinn Free Hugger G4 G5 Game-Berus Giant Crow Grizzly Nyah Hundred-Eyes Octopus Jumping Spider Mosquito Girl *Rafflesidon Rhino Wrestler Royal Ripper Scaledon Senior Centipede Showerhead Sky King Subterranean King Super Mouse 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 Autumn Phantom Red Golden-ringed Dragonfly *Benpatsu *Choze Dark Matter Gunner Eagle Enamel Evil Eggs Evil Eye Eyesight Falcon Fish of DarknessGale Gigakigan Goddess Glasses Gyoffrey Hamukichi *Haragiri Hawk Hellfire Junior Centipede *Kite ManakoPlatinum SpermRosie Raptora *RepteraSuppon Sword Devil Executioner Venus Mantrap Volten *