Grimer (Japanese: ベトベター Betbeter) is a Poison-type Pokémon. It evolves into Muk starting at level 38.
Grimer is a purple pile of poisonous sludge with two arms that have hands with three fingers. It has saucer-like eyes and a gray mouth. Grimer may be distantly related to Koffing, another Pokémon that is associated with pollution.