Corina Calderon (End of Watch) recently worked on Suicide Squad in a character named Grace, and while she "honestly can't reveal much of [her] character," she did talk a bit about working with Jared Leto as The Joker in a recent interview with HHB Media.
"Before we shot my scenes, I was on set with David Ayer, the director, and got to watch [the other actors] do their scenes before my scenes. Jared Leto as the Joker is just brilliant. I was amazed, absolutely mesmerized. Watching him really gave me this whole new freedom as an actress. I felt ballsy just watching him. An amazing lesson and an amazing teacher, but he didn't even know he was teaching me."
The actress was visibly excited talking about watching the actors on set, and adds her voice to the choir of people praising Leto in the iconic role.