Captain Underpants and the Terrifying Return of Tippy Tinkletrousers. Captain Underpants #9 - Dav Pilkey

Captain Underpants and the Terrifying Return of Tippy Tinkletrousers is the 9th book in the Captain Underpants Series. Captain Underpants returns for his unmissable 9th adventure. This time, George and Harold encounter a familiar face - Professor Poopypants who now goes by the name of Tippy Tinkletrousers, and is determined to seek revenge for all of the teasing his old name inspired. Can George, Harold, and the amazing Captain Underpants stop his reign of terror before it's too late? Perfect for reluctant readers, the "Captain Underpants" brand is a huge success, with over 65 million books currently in print worldwide.