Margot Robbie made the surprising revelation during a recent interview — shocking Colin Farrell, who was being interviewed as well.

Talk about a close call – According to both Margot Robbie and Collin Farrell, had it not been for the last-minute intervention of The Batman director Matt Reeves, the disastrous Birds of Prey (and the Fantabulous Emancipation of One Harley Quinn) would have featured not Black Mask, but The Penguin as its central antagonist.

"And then [director/writer] Matt Reeves said, 'Don't use the Penguin. I'm going to use him in my thing,'" Robbie said. "And so we swapped it to Black Mask [played by Ewan McGregor]."