Romaji: Minomadam) is a Bug type Pokémon introduced in the fourth generation. Its secondary typing is determined by its cloak, which it gets as a Burmy; Plant Cloak for Grass-typing, Sandy Cloak for Ground typing, and Trash Cloak for Steel typing. Unlike Burmy, it cannot change its cloak.
Wormadam is a black, bagworm-like Pokémon with a coat of plants, sand, or garbage, the last of which resembles building insulation. It has oval eyes, a long pointed beak, and a long antenna with a coiled tip. The beak is tipped with varying colors depending on the coat. The coat forms a pair of arm-like structures near this Pokémon's head. It is a female-only species, with Mothim as its male counterpart.
The Plant Cloak form has several white flowers covering it and gives Wormadam a green-tipped beak and large leaves for arms. It will be dotted with reddish-brown rocks, and have chains of pebbles for arms and a brown tipped beak if it has the Sandy Cloak. When covered by the Trash Cloak, it has a pink-tipped beak and long, dark pink ribbons for arms. Wormadam that evolve on cold days are said to form thicker cloaks.
Unlike Burmy, Wormadam's cloak is a part of its body, with the fusion being suspected to have been caused by the energy generated by its evolution. Its cloak acts similar to fur and skin and never sheds. Sandy Cloak Wormadam's cloak is an effective defense, capable of repelling a Starly's pecking with ease, whereas Trash Cloak Wormadam uses its cloak as camouflage, as it helps it hide from predators.
