Ricky Ricotta fears the worst when he hears rumors that Uncle Unicorn is hatching a plan to build a destructive robot of his own that will finally help him succeed in taking over the Earth and becoming sole ruler of it.

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. By flipping the pages, the reader may view animated illustrations.

Whenever Dragon wakes up groggy, he always does everything wrong, like sweeping a hole in his dirt floor, or reading an egg and frying his newspaper.

When George and Harold hypnotize their principal into thinking that he is the superhero Captain Underpants, he leads them to the lair of the nefarious Dr. Diaper, where they must defeat his evil robot henchmen.

Dog Man overcomes the Supa Buddies only to be confronted by a new problem that tests the limits of the entire pack to avoid barking up the wrong tree.

A latest entry in the best-selling series by the Caldecott Honor-winning creator of the Captain Underpants adventures finds Dog Man tapping the strength of kindness and persistence when he is embroiled in a howling dilemma.

When Dog Man is sent to the pound for a crime he didn't commit, his friends work to prove his innocence.

Only Captain Underpants can stop the space aliens who have turned everyone into lunchroom zombie nerds.

Ricky Ricotta, his Mighty Robot, cousin Lucy, and some friends set out to save mousekind from Stupid Stinkbugs from Saturn, with a little help from some special gum and taffy.

George and Harold have really done it this time-- they've created a monster! She's faster, smarter, and more evil than anything the world has seen before--she's Wedgie Woman! With the help of her horrible robots and her horrendous hairdo, Wedgie Woman is on a mission to take over the world, and she'll give a whopping wedgie to anyone who stands in her way--including Captain Underpants.