Harleen Quinzel (Earth 40)

Harley Quinn, born Harleen Frances Quinzel, is a female Human who was a psychiatrist at Arkham Asylum who was turned into a insane criminal and the ex-girlfriend of The Joker. She is the Joker's on again and off again sidekick. She is Selina Kyle's righthand woman and works with Selina and her husband Typhuss as a member of the Sirens.