Turned Harengon

After death, Harengon souls are collected by Lepus, whose servants cast back into the world through Lepus’s eggs. Lepus’s servants deposit these eggs far and wide, but the servants’ journeys start deep underground in the caverns of the middle world. 
Abominations. The creatures that hatch are part Harengon, part lovecraftian horror. Most features are easily identifiable as Harengon, but things like tendrils, extra appendages, transparent skin, and slime are common amongst the turned. 
Malicious Purpose. These creatures are given a simple goal at birth; commit evil acts until death. Because of this specific command, the tortured souls used to create Turned Harengon pass on after their horrific new vessels are destroyed.