Luthorians
The Luthorians are, simply put, werewolves. Ages ago Luthor discovered a pack of wolves who had been mutated similarly to he and the other Ancients. They posessed man-like intelligence and, like Luthor himself, shape-shifting abilities. He seemed to understand the wolves on a mental level, and eventually he adopted their ways and even their shape, and became the forefather of Lycanthropes. Therefore, a Luthorian might have Man or Wolf ancestors, and might be more inclined to one shape than the other. The eldest and most gifted of the Luthorians can change their shape back and forth fairly easily. They cannot, however, drastically alter their size.
Luthorians aren't only metamorphically gifted. The original wolves boasted abilities similar to those of the original six Ancients and thus Luthorians have a greater tendency to be gifted in more ways than just metamorphosism. Some might have a very low metamorphic ability but an intensely high ability for extra-sensory feats, for example.
While a Luthorian can withstand some time in the sun, he or she can not endure it as well as a Primorian might. He or she would develop a sunburn faster, and would most likely suffer from a sunstroke before too long. Urban Luthorians prefer to spend most of their time in the sewers or abandoned subway lines of the city while more rural Luthorians make their havens in caves and abandoned farmsteads.
Unlike the other Predators, Luthorians have a "we" mentality, and tend to stay together in closely-knit packs. They are also the only Predators least likely to hunt humans for food.