Captain Underpants and the big, bad battle of the Bionic Booger Boy. the seventh epic novel Part 2 The revenge of the ridiculous Robo-Boogers / Dav Pilkey
George, Harold, Captain Underpants, and Sulu the bionic hamster battle the three ridiculous Robo-Boogers in an attempt to turn the Bionic Booger Boy back into Melvin Sneedly