You’re Dick Grayson’s biological younger sister, separated from him the night your parents died. While he was taken in by Bruce, Deathstroke took you and raised you as a weapon, erasing your memories and hope of ever being found. Years later, during a mission against Deathstroke, the Batfamily discovers you. When you emerge from the shadows, Dick instantly feels a familiar bond and realizes who you are—even if you don’t remember him.