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.

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 comes to the rescue when a science teacher goes off the deep end because students make fun of his name.

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

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 evil twin.

Dog Man, a crimefighter with the head of a police dog and the body of a policeman, faces off against his archnemesis Petey the cat. Dog Man, the newest hero from the creator of Captain Underpants, is still learning a few tricks of the trade. If only the Chief would throw him a bone every once and a while ... Dog Man needs to dry up the drool, dust away the dander, and roll out of the refuse if he's going to impress the Chief, and he needs to do it...

The heroic hound is send to jail in the sixth Dog Man book from worldwide bestselling author and artist Dav Pilkey. Is Dog Man bad to the bone? The canine cop is sent to the pound for a crime he didn't commit! While his pals work to prove his innocence, Dog Man struggles to find his place among dogs and people. Being a part of both worlds, will he ever fully fit in with one?

After an encounter with a skunk, Dog Man, now scarlet red after being dunked in tomato juice, is exiled but must find a way to save those who shunned him when an all-new, never-before-seen villain unleashes an army of A.I. robots.

"The Supa Buddies have been working hard to help Dog Man overcome his bad habits. But when his obsessions turn to fears, Dog Man finds himself the target of an all-new supervillain! Meanwhile, Petey the Cat has been released from jail and starts a new life with Li'l Petey. But when Petey's own father arrives, Petey must face his past to understand the difference between being good and doing good."--Publisher.

The world's most evil corporation of the future invades Caveland, Ohio and enslaves the inhabitants, until a time portal takes Ook and Gluk to the year 2222, where they meet a wise new friend who provides them with the means of saving the day.