Inspired by Batman, Kelley buys an imitation Robin costume and searches for him. Although Batman defeats the Mutants at the city dump with the Batmobile's advanced weaponry, the Mutant Leader goads him into a hand-to-hand fight. Batman, due to his age and a decade of physical inactivity, is beaten and almost killed. Kelley creates a diversion which allows her and Batman to return to the Batcave, where Wayne's butler Alfred Pennyworth tends to his wounds. Impressed with her bravery, Wayne decides to make Kelley his new protegee. Batman strategically defeats the Mutant Leader in a fight surrounded by the Mutants. Seeing Batman defeat their leader, the Mutants disband and some rename themselves the Sons of the Batman, using excessive violence against criminals.