2. She Shoots The Joker?
Chances are that of all the villains who don't make it to the end of this movie, The Joker won't be among them. After all, it's been rumoured that the Clown Prince of Crime ultimately breaks out of Belle Reve and slaughters nearly every guard on his way out. However, a couple of set photos (which showed what happened next between The Joker and "Harleen" after he slaps her) featured Robbie's character holding a gun to his head. Does she shoot him? Probably not, but this is more than likely still a pretty massive moment in Suicide Squad. Perhaps her decision not to take out The Joker is what led to her then aligning with him. Alternatively, this confrontation might take place between them after he murders Jason Todd, and Harley does shoot him, leading to The Joker being captured and imprisoned. It's too early to say, but their relationship will clearly be a focal point.