I forget who's ending it was in but I seem to remember Raiden foretelling the future of Mortal Kombat, let me elaborate. You beat the game with some character (slips my mind) and then you hear Raiden speaking of the great threat that the Dragon King now poses, the camera pans up into the clouded night sky and you see the faded visage of The Dragon King, Raiden continues about the imposing threat that VAMPIRES might play in the following tournaments and also other RACES OF CREATURES and more shaded silhouettes start to emerge. Now I think that this is a worthwile prediction since this ending coincides with many others such as Reptiles and Nitara's who in fact are these races of creatures that we are talking about. So hopefully look foward to seeing new and different creatures in the next MK, (I think it might be Raiden's ending but don't quote me on that).