Dimentio is the true main antagonist in Super Paper Mario. His name is a pun on "dementia" and "dimension". Like Mario and Mimi, he can flip between dimensions, but he can also manipulate them (an ability he shares with Merloo) and controls Dimension D, which he designed. Skilled in duplication, teleportation, and invisibility, Dimentio is initially one of the four main minions of Count Bleck (the central antagonist of the game), along with O'Chunks, Mimi, and Nastasia.