Mushmeanie (ヒドゥン Hidden?) is a badnik in the form of a spherical robot head on a spring, created by Doctor Robotnik. Mushmeanie appear at Mushroom Hill Zone in Sonic & Knuckles. Mushmeanies also reappear at Mushroom Hill Zone in Sonic Generations for the 3DS. It protected and camouflaged by an orange mushroom cap on its head.
Mushmeanies hop around aimlessly in a fixed area. They must be hit twice to be destroyed. The first attack will knock off the mushroom cap, exposing the spherical robot head, and the second attack with Spin Jump will destroy the badnik.