Suicide Squad is going to be a dark movie.

So dark that director David Ayer has hired an on-set "therapist" of sorts to help his all-star cast avoid from going too far for their roles.

"David Ayer is about realism," Adam Beach, who plays Slipnot in the film, told me at the premiere of Joe Dirt 2: Beautiful Loser (streaming on Crackle July 16.) "So if your character is tormented, he wants you to torment yourself. He wants the real thing."

But he doesn't want his stars, which include Jared Leto as The Joker, Will Smith as Deadshot and Margot Robbie as Harley Quinn, to take their work home.

"We kind of have like a therapist on board if you fall off the wagon and really are villainous," Beach said. "There's a friend of [Ayer's] that's very unique in making sure we have our ground."