Olrath the Eaten

Olrath the Eaten, Ever Hungering, Princess of Ash and Bone
The demon lord of undeath was once a Demon of strength and destruction, but in her quest for greater power she was burned almost to nothing in the crucible of Rashalkthi, by either the negligence or the spite of Excelsior the Skybreaker. Now she lacks life and flesh of her own, and hungers for that of others, as do the ghouls who are her particular servants.
Olrath is a humanoid demon, standing more than fifteen feet tall, but her body is gaunt to the point of emaciation, skin stretched tight over sharp bones. Her ribs groan with every movement as her leathery skin compresses them ever further. Her head seems immense in proportion to her spindly frame, and mouth is huge, taking up almost half of her face and gaping wide to show row upon row of long, dagger-sharp teeth. Her fingers are long and thin, almost skeletal.