Captain Underpants is a children's novel series by American author and illustrator Dav Pilkey. The series revolves around two fourth graders, George Beard and Harold Hutchins, living in Piqua, Ohio, and Captain Underpants, an aptly named superhero from one of the boys' homemade comic books, that accidentally becomes real when George and Harold hypnotize their megalomaniacal principal, Mr. Krupp.The series includes 12 books and 3 spin-offs, and won a Disney Adventures Kids' Choice Award in 2007.