Whomp Mario is one of Mario's Power-Ups. Mario can access to this form by using a Whomp Mushroom. This transformation is considered as a "companion" ability to Thwomp Mario. He differs of the others Whomps with his big red cap, his big nose and mustache and his lack of a Whomp's mouth.
Like a classic Whomp, Whomp Mario can attack his enemies by falling over and trying to crush them. Whomp Mario also can kill low monsters like Goombas or Octoombas simply by hustle them. He is also insensitive to normal Fireballs, Iceballs, or Lemmy's balls, thrown by the Ball Bro. Once crashed on the ground, Whomp Mario must wait a few seconds to stand up. He will turn back into Super Mario if a powerfull enemy like Chomps, Piranha Plants, the differents Bros. (Hammer Bro., Boomerang Bro. ...) or other Whomps hurt it; or if he fails three times to crush enemies. Luigi can also use the Whomp Mushroom.
- Because of his large size and important weight, Whomp Mario can't run or jump.
- The large version of the Bros. (Sledge Bro., Curve Bro. ...) and the Thwomps can ground pounding on the back, and instantly kill him.
- Like the normal Whomps, Whomp Mario has two plasters in the back.