Muk

Muk is a Poison type Pokémon introduced in Generation 1. It is known as the Sludge Pokémon.

Muk has a new Alolan form introduced in Pokémon Sun/Moon.

Pokédex entries

Red
Blue
Thickly covered with a filthy, vile sludge. It is so toxic, even its footprints contain poison.
Yellow Smells so awful, it can cause fainting. Through degeneration, it lost its sense of smell.
Gold They love to gather in smelly areas where sludge accumulates, making the stench around them worse.
Silver Its body is made of a powerful poison. Touching it accidentally will cause a fever that requires bed rest.
Crystal As it moves, a very strong poison leaks from it, making the ground there barren for three years.
Ruby From MUK’s body seeps a foul fluid that gives off a nose-bendingly horrible stench. Just one drop of this POKéMON’s body fluid can turn a pool stagnant and rancid.
Sapphire This POKéMON’s favorite food is anything that is repugnantly filthy. In dirty towns where people think nothing of throwing away litter on the streets, MUK are certain to gather.
FireRed It is usually undetectable because it blends in with the ground. Touching it can cause terrible poisoning.
LeafGreen Thickly covered with a filthy, vile sludge. It is so toxic, even its footprints contain poison.
Emerald It prefers warm and humid habitats. In the summertime, the toxic substances in its body intensify, making MUK reek like putrid kitchen garbage.
Diamond
Pearl
Platinum
A toxic fluid seeps from its body. The fluid instantly kills plants and trees on contact.
HeartGold They love to gather in smelly areas where sludge accumulates, making the stench around them worse.
SoulSilver Its body is made of a powerful poison. Touching it accidentally will cause a fever that requires bed rest.
Black
White
A toxic fluid seeps from its body. The fluid instantly kills plants and trees on contact.
Black 2
White 2
It’s so stinky! Muk’s body contains toxic elements, and any plant will wilt when it passes by.
X They love to gather in smelly areas where sludge accumulates, making the stench around them worse.
Y A toxic fluid seeps from its body. The fluid instantly kills plants and trees on contact.
Omega Ruby From Muk’s body seeps a foul fluid that gives off a nose-bendingly horrible stench. Just one drop of this Pokémon’s body fluid can turn a pool stagnant and rancid.
Alpha Sapphire This Pokémon’s favorite food is anything that is repugnantly filthy. In dirty towns where people think nothing of throwing away litter on the streets, Muk are certain to gather.
Sun The stench it gives off will make your nose scrunch up. Still, there are Muk fans who think that’s a good thing.
Moon After recent environmental improvements, this Pokémon is now hardly seen at all. People speculate that it may go extinct at some point.
Ultra Sun Their food sources have decreased, and their numbers have declined sharply. Sludge ponds are being built to prevent their extinction.
Ultra Moon Because they scatter germs everywhere, they’ve long been targeted for extermination, leading to a steep decline in their population.

Evolution chart

Grimer
#088
Grimer
Poison

(Level 38)
Muk
#089
Muk
Poison
Alolan Grimer
#088
Grimer
Alolan Grimer
Poison · Dark

(Level 38, in Alola)
Alolan Muk
#089
Muk
Alolan Muk
Poison · Dark

Name origin

muck
dirt

Moves learned by Muk

Muk sprites

Type Generation 1 Generation 2 Generation 3 Generation 4 Generation 5 Generation 6 Generation 7
Normal Muk  sprite from Red & Blue Muk  sprite from Silver Muk  sprite from Ruby & Sapphire Muk  sprite from Diamond & Pearl Muk  sprite from Black & White Muk  sprite from X & Y Muk  sprite from Sun & Moon
Shiny Muk Shiny sprite from Silver Muk Shiny sprite from Ruby & Sapphire Muk Shiny sprite from Diamond & Pearl Muk Shiny sprite from Black & White Muk Shiny sprite from X & Y Muk Shiny sprite from Sun & Moon

See all Muk sprites

Where to find Muk

Red
Blue
Pokémon Mansion
Yellow Cinnabar Island, Power Plant, Pokémon Mansion
Gold
Silver
Crystal
Route 16, 17, 18, Celadon City
Ruby
Sapphire
FireRed
Evolve Grimer
LeafGreen Pokémon Mansion
Emerald Evolve Grimer
Diamond
Pearl
Platinum
Evolve Grimer
HeartGold
SoulSilver
Route 16, 17, 18, Celadon City
Black
White
Trade/migrate from another game
Black 2
White 2
Route 9, Castelia Sewers
X
Y
Trade/migrate from another game
Omega Ruby
Alpha Sapphire
Evolve Grimer
Sun
Moon
Ultra Sun
Ultra Moon
Evolve Grimer/Alolan Grimer