Netherealm released a single image for Injustice: Gods Among Us who turns out to be interesting since shows another character who will be part of the roster for the game. In the screen, you can see Killer Croc, one of Batman's enemies while grabbing behind Flash. However, always in the picture, you can see in the background as well as other two characters who at the time had not been announced: the Riddler and the Penguin. We are awaiting further details about these, if we can impersonate them too or will simple appearances in main mode.