The modern Joker is the one who was featured in the comic books before "The New 52" relaunch, and he's pretty much what you'll primarily see if you Google the villain's name. A mash-up of some of the best things about past versions of the Clown Prince of Crime, he has a simple purple suit and the now classic white face, green hair, and big smile. It's that smile though which is most worth paying attention to here, but would it work in a movie? Tim Burton's Batman played around with it, but CGI means that Jared Leto's Joker could very well have that massive grin constantly on his face. That's bound to have an impact on Leto's performance, and might be tough to maintain. If the actor commits (which you have to imagine he will), then this huge and almost cartoonish grin would make him look very unique, and also downright terrifying during some of the Suicide Squad's darker moments.