|Homeland||Kallas Lake, River Kingdoms|
Source: Fey Revisited, pg(s). 33
The Kallas Devil is a nuckelavee with the torso of a sea hag dwelling in a partially flooded cave below the bottom of the Kallas Lake in the River Kingdoms. It terrorises the banks of the Sellen River from Tymon to Creeperwood. Due to its torso's influence, the Kallas Devil flays its victims and clads itself in their skins, which it needs to constantly replenish. Some villages offer criminals as sacrifices to the Kallas Devil, and although it readily receives these sacrifices, it shows no favour to its supplicants.