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Showerhead (シャワーヘッド, Shawā Heddo) was a Demon-level monster from the Monster Association. He was one of the monsters sent by Gyoro Gyoro to investigate an unknown intruder, along with Super Mouse and Unihorn.[1] He was killed by Overgrown Rover.[2]


Showerhead had a humanoid body who, from waist down, had human legs. Like his name suggests, he had a circular showerhead for a head and clamps for hands. His torso appeared armored in plastic above his black clothing and his chest had a gear which he could turn to change the properties of the liquid he fires.


Showerhead seemed to have confidence in his abilities, believing he could defeat Garou and blast back Overgrown Rover's attack, only to meet his demise. However, he acknowledged the strength of higher Dragon-level mysterious beings and was willing to work alongside other monsters when fighting opponents.


Human Monster Saga[]

Monster Association Arc[]

Showerhead spraying hot water

While Garou and Tareo were walking away from Overgrown Rover, Super Mouse appeared alongside Unihorn and Showerhead and attacked Garou. Super Mouse deemed Garou a warm-up before the fight against the heroes. Showerhead and Unihorn attacked Garou with their respective techniques, but Garou easily dispatched both of them. Super Mouse threw a left jab at Garou, but the Hero Hunter blocked his punch using the Whirlwind Iron Cutting Fist, creating several wounds. The monsters, however, get back up, and express surprise at Garou's superb fighting strength as they have been all evaluated by Gyoro Gyoro to be demon level threats.

Garou is scornful of such arbitrary labels and declares himself a Dragon-level monster. Super Mouse scoffs at the notion, stating only the upper echelon of the Monster Association were at that level of strength. The three monsters then prepare their special combo they developed called the Demon Trinity Bursting Speed Thrust. However, Garou already experienced a similar technique against Stinger, and is able to easily deflect the attack and brush Unihorn's attack aside. Unfortunately, the attack inadvertently hit Overgrown Rover. Who, In anger, tosses the crushed remains of Unihorn's head back at the feet of the two mysterious beings and their adversary. At the sight of this Showerhead fearfully whimpers they stepped on the toes of a Monster Association administrator. In reply to Garou's questioning such a thing seeing the creature as a mere house pet, the former mentions how disaster levels are equivocal to true strength within the organization. Shortly afterwards, the monstrous dog fires an energy core at everyone in the corridor. Showerhead attempts to stop the attack with his maximum water pressure, but he is vaporized alongside Unihorn. Super Mouse is confident that his regeneration can revive him, although the energy blast overwhelms his healing abilities, and he is promptly disintegrated alongside his comrades.

Abilities and Powers[]

Being a Demon-level mysterious being, Showerhead was shown to be very powerful. He was capable of putting up a fight against Garou with the assistance of his two other Demon-level partners.

Supernatural Abilities[]

Liquid Conversion: Showerhead had the ability to change the properties of the liquid he shoots out of his head such as temperature and pressure. Some liquids he can shoot are liquid glue, sulphuric acid or other mysterious chemicals.[3]

Physical Abilities[]

Enhanced Durability: He was able to survive a punch from Garou that broke through his head.

Fighting Style[]

Shower: Showerhead showers various chemicals onto his opponents.

  • Jetstream: (ジェット水流, Jetto Suiryū) Showerhead sprays any chemical at his disposal in full force.[4]
  • Combination Attack: Demon Trinity (三鬼一体, Sanki-itsutai; Viz: Triple Demon)
    • Bursting Speed Thrust (爆速刺し, Bakusoku-zashi; Viz: High Speed Shish Kebab): The attack utilized the powers of Unihorn, Showerhead, and Super Mouse. Super Mouse launches a transformed Unihorn forward as Showerhead continues to propel him with Jetstream. Garou found it slow and compared it to Stinger's attack,[5] though the attack was powerful enough to bother Overgrown Rover.


Showerhead's name is clearly based on a shower head.

Major Battles[]

Participants Chapter(s) Episode(s) Result
Showerhead, Unihorn and Super Mouse vs. Garou 93 None Interrupted by Overgrown Rover


  1. One-Punch Man Manga; Chapter 93, page 8
  2. One-Punch Man Manga; Chapter 93
  3. One-Punch Man Manga; Chapter 93, page 10
  4. One-Punch Man Manga; Chapter 93, page 21
  5. One-Punch Man Manga; Chapter 93, page 21-23


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 *