The planned movie will feature a collection of famous female heroes and villains.
Margot Robbie Needs a Break From Harley Quinn (For Now)
Harley Quinn spin-off movie in the works with Margot Robbie
Margot Robbie's Harley Quinn could get a spin off movie
A Harley Quinn Vs. The Joker Spinoff Movie Being Developed by Warner Bros. — GeekTyrant
Suicide Squad's Joker and Harley Quinn get spin-off movie
Harley Quinn vs The Joker' spin-off in the works
Harley Quinn spin-off signed and sealed: Margot Robbie to produce, Films, Entertainment
Margot Robbie to Star in Harley Quinn Spin Off Movie - Project-Nerd
Margot Robbie's Upcoming Harley Quinn Movie Will Feature Other Female Supervillains, Make Zillions Of Dollars - BroBible
Joker/Harley Quinn Spinoff in the Works + More Projects and Casting News