The Orcs of Middle-Earth
Through 'dark sorcery' an elf body changes into the twisted orcish form, provided that elf is evil enough. Although some would think this guild is allied with the dark tower, these orcs are more like a lawless pack from all corners of Middle Earth, holding no allegiance other than whatever the individual member claims. Naturally, members of the goblin race may join as well.
Location: Misty Mountains, Middle Earth