Uncle Waluigi is one of the The Main Twelve uncles and one of Uncle Baas's children. He is Uncle Baas's least favorite child. He is the god of revenge, evilness, and cheating. He was banished to the Underworld after cheating at Tetris. Because of his banishment, he now watches over the Underworld.
Powers and Abilities
Uncle Waluigi originally had the ability to teleport to Uncle Mansion at will, but it was taken away when got banished. He is an expert at creating plans to get back at people. He can also grow and shrink his mustache at will.