Mad Doctor Fish

Mad Doctor Fish (マッドドクターフィッシュ, Maddo Dokutā Fisshu) are Mysterious Beings and part of the Monster Association. They live like parasites within the liquid body of Evil Natural Water.

Appearance

The Mad Doctor Fish's appearances are based on red garras (also known as doctor fish), but they have larger jaws and sharper teeth that bear a resemblance to carnivorous piranhas. They also appear to possess an unusual six eyes.

Plot

Human Monster Saga

Monster Association Arc

The Mad Doctor Fish are seen swimming in the fish tank containing Evil Natural Water. A monster breaks the tank holding Evil Natural Water, releasing it as well as the fishes, to attack Atomic Samurai's DIsciples. They devour the monster that released them, and Evil Natural Water then launches them at Iaian, but he easily slices them up.^[1]

Battles

Participants	Chapter(s)	Episode(s)	Result
Mad Doctor Fish vs. Iaian	114	None	Loss

Abilities and Powers

Because their collective threat level is Tiger, it can be implied that the Mad Doctor Fish are not extremely powerful.

Physical Abilities

Powerful Bite: They have a strong bite, able to easily pierce the flesh of other Mysterious Beings. They are able to completely devour weaker and wounded opponents in seconds. They also strong enough to chew through metal as one of them chew through a chunk of Iain's sword.

Trivia

They are the only monsters so far live like parasites in the body of a monster.

Reference

↑ One-Punch Man Manga; Chapter 114

Navigation

v • eMonster Association
Leaders	Orochi ^† • Psykos/Gyoro Gyoro ^†
Executives	Black Sperm • Elder Centipede ^† • Evil Natural Water ^† • Fuhrer Ugly ^† • Gouketsu ^† • Gums ^† • Homeless Emperor ^† • Nyan ^‡ • Overgrown Rover
Dragon	Bakuzan ^† • Gale Wind ^‡ • Golden Sperm ^† • Hellfire Flame ^‡ • Phoenix Man
Demon	Awakened Cockroach ^† • Baquma ^† • Bug God ^† • Building Booper ^† • Devil Long Hair ^* • Do-S ^* • Eyesight ^† • Face Ripper ^† • Fist Fight Djinn ^† • Free Hugger ^† • G5 ^† • Hundred-Eyes Octopus ^† • Rafflesidon ^† • Rhino Wrestler ^† • Royal Ripper ^† • Senior Centipede ^† • Showerhead ^† • Super Mouse ^† • The Great Food Tub ^† • The Three Crows ^† • Unihorn ^† • Vampire (Pureblood) ^†
Tiger	Destrochloridium ^† • Electric Catfish Man • Mad Doctor Fish ^† • Maiko Plasma • Marshall Gorilla ^* • Master Joe ^† • Sludge Jellyfish ^†
Unknown	Benpatsu ^* • Choze ^† • Evil Eggs ^† • Evil Eye ^† • Gale ^≠ • Goddess Glasses ^≠ • Gyoffrey ^† • Hamukichi ^* • Haragiri ^† • Hellfire ^≠ • Junior Centipede ^† • Manako • Platinum Sperm ^† • Raptora ^† • Reptera ^* • Rosie ^† • Sword Devil Executioner ^† • The Three Tempest Brothers • Venus Mantrap ^† • Volten ^*

v • eMysterious Beings
Dragon (or higher)	Boros ^† • Orochi ^†
Dragon	Bakuzan ^† • Black Sperm • Carnage Kabuto ^† • Elder Centipede ^† • Energiser ^† • Forest King ^† • Fuhrer Ugly ^† • Gale Wind • Geryuganshoop ^† • Gouketsu ^† • Groribas ^† • Gyoro Gyoro ^† • Gums ^† • Golden Sperm ^† • Hellfire Flame • Homeless Emperor ^† • Kenzan Rat ^† • Marugori ^† • Melzargard ^† • Nyan • Overgrown Rover • Pluton ^† • Psykos • Vaccine Man ^†
Demon	170,000-Year-Old Cicada Larva ^† • 170,000-Year-Old Cicada Adult ^† • Armored Gorilla • Awakened 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 ^† • Giant Snowman ^† • Grizzly Nyah ^† • Hundred-Eyes Octopus ^† • Internet Surfers ^† • Jumping Spider ^† • Lord of Mountains ^† • 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 ^† • Twin-Headed Tsuchinoko ^† • Unihorn ^† • Vampire (Pureblood) ^†
Tiger	Black Roast ^† • Crablante ^† • Delorean ^† • Destrochloridium ^† • Electric Catfish Man • Fighting Bull-Frog ^† • Forest Folk ^† • Frog Man ^† • Ground Dragon ^† • Kamakyuri ^† • Kombu Infinity • Mad Doctor Fish ^† • Maiko Plasma • Marshall Gorilla ^* • Master Joe ^† • Man-Eating Capybara • Octopus Claw Man ^† • Personification Of A Light Pull Cord ^† • Sludge Jellyfish ^† • Slugerous ^† • Three-Eyed Ghost ^† • Urn Eel ^† • Withered Sprout ^†
Wolf	Beer Bellee • Himawari ^† • Hotdog ^† • Messenger of the Seafolk ^† • Piggy Bancon ^† • Tongue Stretcher • Shiverhuahua ^†
Less than Wolf	Monster Chick Man
Unknown	Alien Seer ^* • Ancient King ^† • Angry Grandpa ^† • Autumn Phantom Red Golden-ringed Dragonfly ^* • Benpatsu ^* • Choze ^† • Cruel Dragon ^† • Dark • Dark Matter Gunner ^† • Dirt Earthworm ^† • Eagle ^† • Empty Void • Enamel ^† • Evil Eggs ^† • Evil Eye ^† • Evil Natural Water ^† • Falcon ^† • Fish of Darkness • Gale ^≠ • Giant Salamander ^† • Gigakigan ^† • God • Goddess Glasses ^≠ • Gyoffrey ^† • Hamukichi ^* • Haragiri ^† • Hawk ^† • Hellfire ^≠ • Junior Centipede ^† • Kite ^† • Lord Great White ^† • Manako ^* • Men's Esthetician Man ^* • Platinum Sperm ^† • Rosie ^† • Raptora ^† • Reptera ^* • Rangor ^† • Research Hybrid Monster ^† • Sage Centipede ^† • Sea Slug • Snake-type monster ^† • Super Custom YO649Z Mk. II ^† • Suppon ^† • Sword Devil Executioner ^† • The Mad Cyborg • The Three Tempest Brothers • TV Junkyard Monster ^† • Venus Mantrap ^† • Volten ^*

[1] One-Punch Man Manga; Chapter 114

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