Here are the first 10 Captain Underpants books (by Dav Pilkey)

The Adventures of Captain Underpants – George and Harold accidentally create their own superhero, Captain Underpants, through a hypnotic prank.

Captain Underpants and the Attack of the Talking Toilets – The boys bring their comic book to life, unleashing a horde of talking toilets.

Captain Underpants and the Invasion of the Incredibly Naughty Cafeteria Ladies from Outer Space – Alien lunch ladies try to take over the world, and Captain Underpants must stop them.

Captain Underpants and the Perilous Plot of Professor Poopypants – A crazy scientist with a funny name wants everyone to change their names to be as silly as his.

Captain Underpants and the Wrath of the Wicked Wedgie Woman – Miss Ribble transforms into the evil Wedgie Woman after one of the boys’ experiments goes wrong.

Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy, Part 1: The Night of the Nasty Nostril Nuggets – A science experiment gone wrong turns Melvin into a snot-covered monster.

Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy, Part 2: The Revenge of the Ridiculous Robo-Boogers – The boys and Captain Underpants must stop Melvin’s out-of-control creations.

Captain Underpants and the Preposterous Plight of the Purple Potty People – A trip through time and space lands George and Harold in an alternate universe.

Captain Underpants and the Terrifying Return of Tippy Tinkletrousers – The villain Tippy Tinkletrousers returns with a vengeance and a time-freezing robot suit.

Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers – George, Harold, and Captain Underpants battle through time to save the world from evil robot boxers.