Nabassu

The Insatiable nabassus prowl the multiverse in search of souls to devour. If they think they can kill a creature and consume its soul, they attack - even if that other creature is a demon, including another nabassu.

Demons have few rules, and the murder of other Demons hardly raises an eybrow among these fiends. The act of devouring souls is something else. For this reason, most Demons shun nabassus and force them to live on the fringes of the Abyss. There, nabassus pick off waker Demons or, if the situation warrants, gather in packs to take down larger prey. Some especially powerful nabassus even search for demon lords' amulets.

Whenever magic pulls Demons from the Abyss to the Material Plane, nabassus try to get summoned so that they can embark on a feast of souls there. If a nabassu is summoned, it tries to break free so that it can devour the soul of its summoner and then set out to feed on the souls of whatever creatures it can catch. One way a summoner can avoid this fate is by providing a steady supply of souls to the nabassu, which can cause the demon to be cooperative, for as long as the supply lasts.