Muk

Muk is a Poison-type Pokémon known for its amorphous, sludge-like body that emits a foul stench. It is covered in a thick, slimy substance that can be highly toxic, and its presence can pollute the environment. Muk is often found in polluted areas such as industrial sites and garbage dumps, where it feeds on waste and toxins. Its body can change shape, allowing it to squeeze through tight spaces. Muk's ability to absorb toxins makes it a formidable opponent in battles, as it can use moves like Sludge Bomb and Gunk Shot to overwhelm its foes.