Soul-Eater

Soul-Eater are creatures located in A Dark Place in the Shadowlands. They cannot be harmed by mortals. They are drawn to Uuna and only the light of her friend can keep them at bay. If they manage to reach Uuna they do exactly as their name implies, and the darkness swallows her.

Trivia

 * They look like darkened pale orcs.
 * They may be the same kind of creatures as Skulking Horrors in the Maw.