The Brotherhood of the Traveling UnderpantsPaperback, 9 June 2009

The three members of the Bad Guy Brotherhood have broken out of jail, and now they're coming after the superhero who put them there: Melvin Beederman! Goofball McCluskey, Max the Wonder Thug, and Calamity Wayne are building a time machine so they can get Melvin before he ever became a superhero.

Can Melvin and Candace travel back in time and reach the Superhero Academy to save young Melvin?