The creator and designer behind Waluigi recently revealed some concept art regarding a rejected pitch for an evil version of Princess Peach from the Super Mario franchise. Nintendo's Mario and Luigi are usually accosted by their evil, greedy mirrors in various spin-off titles, Wario and Waluigi. Despite them mainly appearing in spin-offs instead of mainline Mario platformers, both of Mario's rival characters have a passionate fanbase. Waluigi, in particular, has become a beloved character in his own right.