Based on DC Entertainment’s villains-forced-to-be-heroes characters, the film boasts a nefarious lineup that includes Will Smith, Margot Robbie and Jared Leto, along with Jai Courtney and Cara Delevingne.

Hardy was to have played Rick Flagg, the leader of the group that consists of Batman villains Deadshot (Smith), Joker (Leto) and Harley Quinn (Robbie), plus Boomerang (Courtney) and Enchantress (Delevingne).

Hardy’s exit is due to scheduling, according to sources. The actor is currently shooting The Revenant, Alejandro Gonzalez Inarritu’s frontier drama that also stars Leonardo DiCaprio, and that shoot is now looking to go longer than initially planned.

Hardy is also starring in Mad Max: Fury Road for Warners, which opens May 15, smack in the middle of Suicide filming. Suicide is due to begin shooting mid-April in Toronto, but Hardy will have press commitments for Fury Road that will take him around the world.

Gyllenhaal has an offer to replace Hardy, but it's unclear whether or not the actor will take it on. Gyllenhaal, who worked with Ayer on the acclaimed police thriller End of Watch, is currently on Broadway for his play Constellations. The play runs until mid-March. It's unknown whether that gives the actor enough prep time or down time for a prolonged shoot.

Suicide has an Aug. 5, 2016, release date.