Warning: The following page/section contains spoilers. Please read at your own risk.
Prince Mush is a character who only appeared in the GameCube video game Paper Mario: The Thousand-Year Door and is the younger brother of Jolene. He is a Toad with pink dots on his head. Prince Mush is seen only at the closing of Chapter 3 upon the player's defeat of Macho Grubba.
Mush decided to become a fighter at the Glitz Pit in order to help out his poor family and eventually became the Champion. Sometime later, Mush witnessed Grubba using his Crystal Star powered machine. Grubba wanted his machine to be kept a secret, so he used the machine to suck away Mush's energy and put him into the Star.
After the battle bewtween Mario and Grubba ends, the Gold Star atop Grubba's machine begins to shine and suddenly Prince Mush appears, much to Jolene's delight.
Prince Mush had been intended to be an optional boss post-Chapter 3, but was removed from the final build of the game.