Grimer is a Poison-type Pokémon introduced in the first generation of the Pokémon series. It resembles a blob of sludge and is known for its ability to absorb toxins from its surroundings. Grimer is often found in polluted areas, where it thrives on waste and garbage. In battles, Grimer can use various Poison-type moves, making it effective against Grass and Fairy-type Pokémon. Its evolution, Muk, occurs when Grimer reaches level 38. Grimer's unique characteristics and abilities make it a notable Pokémon in the franchise, often highlighting environmental themes related to pollution.