captain underpants

After his time-traveling deeds cause the destruction of the world by preventing Harold and George from creating Captain Underpants, Tippy Tinkletrousers tries to use his time machine to correct the situation, but it proves to be difficult to fix.

George and Harold's attempts to hypnotize their teacher results in the creation of the monstrous Wedgie Woman, who sets out to rule the world by getting rid of Captain Underpants.

Professor Pippy P. Poopypants comes to Jerome Horwitz Elementary School to teach science, and goes off the deep end because students make fun of his name, leaving Captain Underpants to save the school from the professor's perilous plot.

A snotty situation ensues when Melvin Sneedley, an academically-gifted student, turns into the Bionic Booger Boy and must be stopped by George, Harold, and Captain Underpants.

Captain Underpants and his friends, having dispatched Melvin Sneedley, the Bionic Booger Boy, must join the fray again when they realize they have forgotten about Sneedley's sidekicks, the Robo-Boogers.

Crackers and Sulu, the Bionic Hamster, finds themselves in a backwards universe where George and Harold's own evil twins rule the school with the help of the wicked Captain Blunderpants.

The monstrous Turbo Toilet 2000 is determined to take revenge on George, Harold, and Captain Underpants.

"George Beard and Harold Hutchins are getting ready for the best holiday ever: Halloween, of course. But their dreams of costumes, candy, and haunted houses go down the drain when Mr. Krupp and Melvin make Halloween illegal! That's when George and Harold come up with Hack-A-Ween, a totally legal spin-off of Halloween. But will disguises, hack-e'-lanterns, and sneak-or-snacking fill the pumpkin-shape holes in their lives? And, more importantly, can Captain Underpants defeat the living Halloween decorations that are trying to destroy the town?"--Back cover.

After his time-traveling deeds cause the destruction of the world by preventing Harold and George from creating Captain Underpants, Tippy Tinkletrousers tries to use his time machine to correct the situation, but it proves to be difficult to fix.