Goomy is a small gooey slug-like Pokémon. It is known as the weakest Dragon-type; its body is very sensitive, covered in a slimy membrane, so it must live in damp, shady places to avoid drying out. Its body is purple in color, the top half being a lighter shade than the underside. Goomy has two feeler-like horns atop its head, tiny black eyes, and a wide mouth with a green spot on either cheek.
Despite being described as the weakest Dragon-type Pokémon, Goomy's slimy body allows it to endure punches and kicks, which slide off harmlessly.
Goomy evolves into Sliggoo at level 40, its final evolution form is Goodra at level 50 while raining outside the battlefield (using moves or abilities to cause rain in a battle cannot make it evolve).