Wart, named Mamu in Japan and in The Legend of Zelda series, is the main antagonist of Yume Kōjō: Doki Doki Panic and Super Mario Bros. 2. He is the leader of a gang known as the 8 bits, and his major appearance centers around his efforts to conquer Subcon, a land of dreams. Wart's information in the original instruction booklet states, "He is the most mischievous of all in the world of dreams. He created monsters by playing with the dream machine." He created all of the game's monsters, which are also referred to as his "moppets." His name comes from the bumps on toads which are also known as warts, as well as the superstition that they can give humans actual warts if handled.