This chapter opens with a warning that it contains “graphic scenes showing two boys beating the tar out of a couple of robots” (79). The chapter is arranged as a “flip-o-rama”: Illustrations on the right can be flipped through to create a moving image of George and Harold pummeling the robot guards until they become “MIXED NUTS (... AND BOLTS!)” (97).

George and Harold, having defeated the robot guards, untie Captain Underpants. Captain Underpants insists that they must save the world before they leave; Harold finds and pulls the self-destruct lever of the laser-matic machine, making it explode. Furious that they thwarted his plans, Doctor Diaper appears and points his Diaper-Matic 2000 ray gun at the group.

Captain Underpants flicks a pair of underpants onto Doctor Diaper’s head, stopping him from firing. George wonders where Captain Underpants got the extra pair of underwear; Captain Underpants asks, “what extra pair?” (104). In subsequent illustrations in the chapter, he is depicted wearing a barrel.

The group worries that they will not escape the explosion of the laser-matic in time. They run from the building. An illustration depicts Captain Underpants leading Doctor Diaper, whose face is still covered.