Animated Series

In the Justice League cartoons episode (Wild Cards Part One and Two) Ace was born with a psychic power that effected even her parents. She would leave people in a comatose state while they had hallucinations. As a little girl she was taken away to a secret base and trained. She was forced to use her powers in a hope that she could be used as a weapon in case the Justice League ever went rouge. She became depressed and was susceptible to the Jokes manipulation when he broke her out of the installation as a teenager. He used her in a plot to defeat the Justice League and put everyone that was watching television into a hypnotic state as she used her powers live on television. Everything worked until Batman showed up and revealed that she was being manipulated by the Joker and took a halo out of the Joker's jacket. She recognized the halo as the same ones her guards used when they were blocking her powers. It was at that moment she stop sending out her hallucinations and left the station.

Her third appearance in the Justice League cartoon happened in the episode (Epilogue). She had a new gang and her powers became so strong that she could actually change the properties of the world. She could create whatever she wanted just by thinking about it. After the Justice League defeated her gang, Amanda Waller told the League that Ace was dying very soon and if she dies while her constructs were still around they would cause our world to cease to exist. The only way to stop her was with a device they had to kill her. Batman volunteered to do the job. He of course never intended to use it and Ace knew it. This was how Batman was even allowed to get near her. She told Batman that all she really wanted was to be a kid and that was taken from her. She asked Batman if he would stay with her and Batman agreed. She died in his arms but not before she ended her constructions thus saving the world.

This caused Amanda Waller to realize that the world needed a Batman and she set out to make one using his DNA to create a serum that she secretly put into a woman who would become the mother of Terry McGinnis and thus making a second generation Batman.