The soulless.. even the gods didnt know of how they came to be. Skeletons are bone and magic, Stygian Knights are armor and soul, but the soulless.. they are just body. No magic, no soul, no mind, no real purpose.
They all have many forms, often humanoid, each one, even the more mammal-like ones.. they have a different pale mask-like face.
This one is in the form of a flesh-golem thing, nearly 200 feet tall.. two deathly looking handaxes made of carved bone and twisted and petrified dead oak. Aye, it drew it with no meaning or intention.. im just saying how it may have fit in, had it been part of the old stories.
Judging by the way I described it, it would have played the part of a suicidal creature in the first Asraiic war, running in, breaking up all of the formations in its wild attacks..