Joker: Part II (2021) cast and crew credits, including actors, actresses, directors, writers and more. One of them is Margot Robbie's Harley Quinn, who will make her third DCEU appearance after 2016's Birds of Prey. Harley Quinn's two movies so far have featured contrasting sides to the character. In she was all about the Joker and had confidence he would prevent anything bad from happening to her. In Birds of Prey, the two break up and she is o32u.