Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy Part 1 by Dav Pilkey Melvin Sneedly is trying to make a bionic super boy and Captain Underpants has to stop him. Themes If you see then click to see more information for a theme. Please take care as context may contain descriptions of a sensitive nature and/or spoilers. HumourSchool EnemiesInventionsPranksTricks