Ewan McGregor will play the villain Black Mask in Warner Bros.' upcoming adaptation of Birds of Prey, it was revealed today. The news comes just a day after Yan spoke at the US-China Entertainment Summit, praising the script and confirming that the film will aim for an R rating.

McGregor's Black Mask is the first villain to be announced for the film, though it has long been rumored that the DC Comics mob boss would be the one to go up against the titular superhero team. McGregor joins a growing cast that includes the likes of Margot Robbie, reprising her Suicide Squad role as Harley Quinn; Mary Elizabeth Winstead, who will play Helena Bertinelli, the Huntress; Jurnee Smollett-Bell, who plays Dinah Lance, Black Canary; and Rosie Perez, who will take on the role of Renee Montoya.

RELATED: DC's Birds of Prey Movie May Be Getting a New Title

First introduced in Batman #386 in 1985, Black Mask was created by Doug Moench and Tom Mandrake. In the comics, Black Mask is a businessman who squanders his inherited fortune and eventually opts to pursue a life of crime, all while blaming Bruce Wayne for his failings. Today's report, which comes from Deadline, does not include details of how Black Mask's story might be changed for the DC Extended Universe.

Yan also confirmed yesterday that she is seeking a half-Asian actor for the role of Cassandra Cain, who has yet to be cast.

Directed by Cathy Yan from a script by Christina Hodson, Birds of Prey stars Margot Robbie, Jurnee Smollett-Bell, Mary Elizabeth Winstead, and Rosie Perez. It's scheduled for release on Feb. 7, 2020.