Burmy

Burmy is a unique Bug Pokemon from the Sinnoh region. It can change its form based on where it battled. It is a Plant Cloak if it battled within a grass region, it is a Sand Cloak if it battled within a cave or on a beach and it is a Trash Cloak if it battled within a building.

Despite the form it takes, it is a pure Bug type. If it's a female, it can evolve into Wormadam, taking on whatever appearance it has based on its cloak and even changes its type depending on its cloak.

A male Burmy, however, can only evolve into a Mothim.