Looking further into these images though, it looks like there are some new "heavy" types in the game. At least from the armored clown faced guy who kind of looks like Frosty at first glance. As to be assumed, the concept art looks like something from the pages of the comics here as well. But that's normal for a comic based game isn't it.
Enjoy. Oh, and also enjoy the nice wallpaper-in-waiting still of Harley Quinn's new look. We got a sneak at it in old screens and the announcement trailer, but now there is a nice and clean shot.