Captain Underpants and the wrath of the wicked Wedgie Woman —Pilkey, Dav, 1966- author, illustrator.

When Harold and George turn fourth-grade teacher Ms. Ribble into the evil Wedgie Woman, she gives the wedgie of doom to unsuspecting people who stand in her way--including principal-turned-superhero Captain Underpants.

Captain Underpants and the attack of the talking toilets —Pilkey, Dav, 1966- author, illustrator.

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.

Captain Underpants and the perilous plot of Professor Poopypants —Pilkey, Dav, 1966- author, illustrator.

When Professor Pippy P. Poopypants comes to Jerome Horwitz Elementary School to teach science, and he goes off the deep end because students make fun of his name, only Captain Underpants can save the school from the prof...

Captain Underpants and the tyrannical retaliation of the Turbo Toilet 2000 —Pilkey, Dav, 1966- author, illustrator.

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

Captain Underpants and the invasion of the incredibly naughty cafeteria ladies from outer space (and the subsequent assault of the equally evil lunchroom zombie nerds) —Pilkey, Dav, 1966- author, illustrator.

Only Captain Underpants can stop the three evil space aliens who have invaded Jerome Horwitz Elementary School and turned everyone into lunchroom zombie nerds.

Captain Underpants and the sensational saga of Sir Stinks-a-Lot —Pilkey, Dav, 1966- author, illustrator.

George and Harold, and their doubles, Yesterday George and Yesterday Harold, have a good thing going. Two of them go to school, while the other two hide in the tree house and play video games all day--then they switch! B...

Captain Underpants and the terrifying return of Tippy Tinkletrousers —Pilkey, Dav, 1966- author.

After being sent to jail for the rest of their lives, George and Harold are taken on a trip back in time by Tippy Tinkletrousers back to their Kindergarten days where they must deal with their bully without the help of C...

The epic tales of Captain Underpants. George and Harold's epic comix collection Volume 2 —Rusu, Meredith, author.

The adventures of Captain Underpants —Pilkey, Dav, 1966- author, illustrator.

The all new Captain Underpants extra-crunchy book o' fun 2 —Pilkey, Dav, 1966- author, illustrator.

George and Harold present comics, puzzles, jokes, laffs, and flip-o-ramas.

The epic tales of Captain Underpants. George and Harold's epic comix collection —Rusu, Meredith, author.

Captain Underpants and the preposterous plight of the purple potty people —Pilkey, Dav 1966-

When George and Harold use their traveling purple potty to travel to another dimension where the school is nice and the principal, Mr. Krupp, thinks they're funny, they meet up with their evil twins and must face their c...

The epic tales of Captain Underpants. The xtreme xploits of the xplosive Xmas —Rusu, Meredith, author.

George and Harold love Christmas, but they've decided that the old traditions could use an upgrade. Their solution? Blissmasa cooler, more modern version of Christmas, including a Mechalition Derby, holi-DJs instead of C...

Captain Underpants and the sensational saga of Sir Stinks-a-Lot —Pilkey, Dav, 1966- author, illustrator.

George and Harold, and their doubles, Yesterday George and Yesterday Harold, have a good thing going. Two of them go to school, while the other two hide in the tree house and play video games all day--then they switch! B...

Captain Underpants and the terrifying return of Tippy Tinkletrousers —Pilkey, Dav, 1966- author.

After being sent to jail for the rest of their lives, George and Harold are taken on a trip back in time by Tippy Tinkletrousers back to their Kindergarten days where they must deal with their bully without the help of C...

Captain Underpants and the revolting revenge of the radioactive robo-boxers the tenth epic novel —Pilkey, Dav, 1966- author, illustrator.

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 Tinkletrous...

Captain Underpants and the tyrannical retaliation of the Turbo Toilet 2000 —Pilkey, Dav, 1966- author, illustrator.

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

Captain Underpants and the revolting revenge of the radioactive robo-boxers : the tenth epic novel —Pilkey, Dav, 1966- author.

George and Harold are forced to contemplate a world without Captain Underpants.

Captain Underpants and the preposterous plight of the Purple Potty People the eighth epic novel —Pilkey, Dav, 1966- author, illustrator.

Harold and George's time-traveling Purple Potty lands them in an alternate universe where everything seems delightful, but evil lurks just beneath the surface, and leads to a battle between Captain Underpants and his own...

Captain Underpants and the big, bad battle of the Bionic Booger Boy. Part 1. The night of the nasty nostril nuggets —Pilkey, Dav, 1966- author.

When George and Harold's latest prank makes a direct hit on the school brainiac Melvin Sneedly, he decides to get even.