These are some suspiciously human-shaped pokemon, aren't they? I guess someone moved up from dog fights to gladiatorial combat...

Anyway, these represent the path of a member of the Cult of the Damned from Warcraft. At first it's just a discontent peasant, approached by some friendly folks with promises of a new purpose and life eternal. He becomes an agent of the cult, and when the time comes, will cast away the pretenses, put on a black robe and chant praises to the Lich-King. And, assuming he doesn't give up his life for Ner'Zhul at some point, he might one day rise through the ranks, learn the secrets of dark magic and become master over the dead, a necromancer.