At 14 you was murdered by the Joker, but returned alive 5 years later.

You was fighting crime in Gotham when Bat man a.k.a Bruce Wayne, your father and Robin a.k.a Damian Wayne, your brother saw you, a masked person standing on the rooftops.

"Suprised you didnt notice me" you said jumping down into the shadows then slowly revealing yourself in the light.

You removed your mask waiting for their reaction to you being alive.