Principal Krupp once again turns into the superhero Captain Underpants in order to save the world, and Jerome Horwitz Elementary School, from the evil talking toilets and the Turbo Toilet 2000.

George and Harold's latest prank backfires in the second book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man! George and Harold are usually responsible kids -- whenever anything bad happens, George and Harold are usually responsible! This time, they accidentally invent an army of terrifying talking toilets. Luckily, they know a superhero with enough snap in his waistband to save the day! This looks like another job for the amazing Captain Underpants!

Principal Krupp once again turns into the superhero Captain Underpants in order to save the world, and Jerome Horwitz Elementary School, from the evil talking toilets and the Turbo Toilet 2000.

Join George Beard and Harold Hutchins for a wedgie-powered wonder! The All New Captain Underpants Extra-Crunchy Book O' Fun 2! Word-searches, mazes, quizzes, crosswords and truly disgusting jokes combine to make this a must for any fan of Captain Underpants and Super Diaper Baby! Have you read your Underpants today?

Harold and George's crazy creation is back — in an adventure that's WEDGIER than ever! He defeated Dr Nappy. He terminated the talking toilets. But is Captain Underpants ready for three massive, tentacled space aliens (in disguise)? Has he met his match in the Giant Man-Eating Dandelion of Doom...?

For use in schools and libraries only. By mistake George and Harold bring to life the most disgusting, life-threatening monster--the terrible Turbo Toilet 2000. Can anyone save the school from the terrifying attack of the Talking Toilets?

George and Harold have to figure out how to fix history in the tenth book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man! George and Harold have been turned into evil zombie nerds doomed to roam a devastated, postapocalyptic planet for all eternity! Unfortunately, the boys can't count on Captain Underpants for help because Tippy Tinkletrousers and his time-traveling hijinks prevented George and Harold from creating him in the first place! With Tippy having changed the course of human history forever, George and Harold will have to figure out a way to change it back!