Fan Casting Harleen Quinzel in My DCEU

Harley Quinn is a flamboyant super-villain and an adversary of Batman usually recognized as the Joker's girlfriend, although she has had her own strong solo career. Born Harleen Quinzel, she had been working as a psychiatrist at Arkham Asylum where she was assigned to the Joker and fell in love with him. This led to her adopting her own costumed persona, adapting the word harlequin, to assist him escape and cause further mayhem.