Big Boo is a larger than average ghost creature from the Mario series. He makes an appearance in Super Mario Adventures when Mario and Luigi enter a ghost house and are confronted by a horde of Boos. He and the other Boos are lured into a room were Mario and Luigi, dressed as psychologists, talk them into ending their evil ways. Like all Boos, Big Boo has the ability to disappear and reappear in different places, go intangible, fly, and use his teeth to bite as an attack. Unlike other Boos, Big Boo can separate into smaller Boos.
