Captain Underpants and the Invasion of the Incredibly Naughty Cafeteria Ladies from Outer Space (Captain Underpants #3) (CD-Audio)

Captain Underpants and the Tyrannical Retaliation of the Turbo

Captain Underpants and the Preposterous Plight of the Purple Potty People: Color Edition (Captain Underpants #8) (Hardcover)

Captain Underpants and the Invasion of the Incredibly Naughty

Buy Captain Underpants and the Invasion of the Incredibly Naughty

Captain Underpants and the Invasion of the Incredibly Naughty

Captain Underpants and the Invasion of the Incredibly Naughty

Captain Underpants and the Preposterous Plight of the Purple Potty

Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy, Part 2: The Revenge of the Ridiculous Robo-Boogers (Captain Underpants #7) (Hardcover)

Captain Underpants and the Invasion of the Incredibly Naughty

Captain Underpants and the Attack of the Talking Toilets by Dav