Harley Quinn joins forces with a singer, an assassin and a police detective to help a young girl who had a hit placed on her after she stole a rare diamond from a crime lord.
Margot Robbie | Harleen Quinzel / Harley Quinn |
Mary Elizabeth Winstead | Helena Bertinelli / The Huntress |
Jurnee Smollett | Dinah Lance / Black Canary |
Ewan McGregor | Roman Sionis / Black Mask |
Rosie Perez | Detective Renee Montoya |
Ella Jay Basco | Cassandra Cain |
Chris Messina | Victor Zsasz |
Ali Wong | |
Matthew Willig | Happy |
Dana Lee | Doc |
Steven Williams | |
Robert Catrini |