Pile Driver Micro-Goomba

Pile Driver Micro-Goombas are a type of Goomba who hide in blocks and jump around. They were introduced in Super Mario Bros. 3 though have appeared in a variety of video games. Being surrounded by a block, the micro Goomba is invulnerable to fire attacks by either of the Mario brothers. Under the block is a Micro Goomba rather than the more common, larger Goomba. When either Mario or Luigi jumps on top of the block, then the Micro Goomba underneath will be revealed, dramatically reducing its defense.