Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy is a wildly popular, irreverent graphic novel/chapter book by Dav Pilkey. The story features the two mischievous fourth-grade protagonists, George Beard and Harold Hutchins, who hypnotize their mean principal, Mr. Krupp, into becoming the superhero Captain Underpants. The plot is a chaotic, disgusting, and hilarious battle against a villain created by a fusion of Krupp's snot, a robot, and a bionic device—the Bionic Booger Boy. The book is characterized by its flip-o-rama animation, toilet humor, and anti-authoritarian themes, successfully appealing to reluctant readers by being outrageously silly and fast-paced.
