Wollywogs are a species of mature amphituber that live in the bowels of subterranean areas. They are gray and have red eyes, and are usually found in watery cave-live areas, such as caves in Pikmin 2 and The Forest Navel in Pikmin. They are defeated in the same manner as Yellow Wollywogs, but are more aggressive, and attack with a jump more readily. The lack of skin coloration is due to living in sunlight-free places.