Gaga coaxes Joaquin Phoenix's Joker to do as he pleases in the first official preview of her voice as the DC Comics villainess.

The Joker, instead of being the infamous clown ... Despite her mime-like makeup, Harley Quinn takes on perhaps the most talkative and commanding role within the traveling circus: the ringleader.

In the Batman canon, Harley Quinn (Gaga) begins her journey as Dr. Harleen Quinzel, an Arkham Asylum therapist who falls in love with Joker and joins him as his oft-abused love interest and ...