Wurmple (Japanese: ケムッソ Kemusso) is a Bug-type Pokémon. Wurmple will evolve into either Silcoon or Cascoon starting at level 7 depending on its personality value. As personality values cannot be influenced by the player, what a given Wurmple will evolve into is essentially random. From there, the Silcoon or Cascoon will evolve again starting at level 10 into Beautifly or Dustox respectively.
Wurmple is a small, caterpillar-like Pokémon. Its body is mostly red, with a cream underside and face. Its eyes are large and yellow with dark pupils. It has a sharp yellow stinger on its head and two on its rear. Behind its forehead stinger is a tall, erect, red spine with a similar, smaller spine behind that. It has small spikes running down the top portions of its body and five pairs of stubby white limbs.