Waluigi is a fictional character in the Mario franchise. He plays the role of Luigi's arch-rival and accompanies Wario in spin-offs from the main Mario series, often for the sake of causing mischief and problems. He was created by Camelot employee Fumihide Aoki and is voiced by Charles Martinet, who described Waluigi as someone who has a lot of self-pity and would "cheat to win."
