Perez is set to portray Gotham City Police Department detective Renee Montoya, The Wrap reported.
Renee Montoya, in the pages of DC Comics, is a lesbian who, after working for the GCPD, takes on the mantle of crimefighting detective The Question. The character has also appeared in Batman: The Animated Series.
Perez joins an ensemble cast which also includes Mary Elizabeth Winstead as Huntress and Jurnee Smollett-Bell as Black Canary. Huntress and Black Canary will be teaming up with Harley Quinn in the film to take down crime lord Black Mask in Gotham City.
Cathy Yan (Dead Pigs) is directing Birds of Prey based off a script by Christina Hodson. Yan will be the first Asian woman to ever direct a superhero film.
Birds of Prey is set for release on Feb. 7, 2020.
Perez shared her enthusiasm for Birds of Prey on Twitter Wednesday in response to another tweet about her casting.
“Thank you so much! Very excited. Love @MargotRobbie’s work & #CathyYan is amazing… And just overwhelmed by & appreciate all the wonderful comments & well wishes:) #birdsofprey @dc,” she said.