Hagarl

Hagarl was a doppelganger who assumed the form of a human boy in order to prey on the inhabitants of Beliard. Hagarl worked as a stable boy at Halamar's Horses around 1368 DR, killing his prey, who included four spice merchants, and dumping the bones (and other treasure) at the north end of Beliard's garbage dump, covering them with layers of garbage.