Ace spent all her childhood being studied and tested, until she was taken in by the Joker and recruited into the Royal Flush Gang. Joker intended to use her to drive millions of people insane, via broadcasting signal. This plan would have succeeded, if not for Batman revealing that the Joker had a power-dampening headband with him all along. Ace turned against her "rescuer" and carried out poetic justice by driving him even further into insanity than he'd already fallen before calmly walking awa