Amoonguss is a mushroom-like Pokémon with a large, light-colored Poké Ball designed cap with warts. It also has a huge, gray, stem-like body; fierce-looking eyes; and a large, pink mouth. Amoonguss wields two Poké Ball-like shields. It uses the Poké Ball-like patterns on its arms to lure in prey, though it doesn't work too well in most cases. It also blows poisonous spores at its opponents. These spores can grow into mushrooms wherever they landed if they are not washed off quickly. Amoonguss rarely moves, preferring to stand near any dropped Poké Balls. Amoonguss is a carnivore, which can be found mainly in long grass as only their mushroom cap head protrudes from it, generally close to water.