Hellmaw

Behavior: Hellmaws are demonic bastardizations of life that were created from the residual energy of powerful or mass demonic summonings seeping into and saturating the live sacrifices. Once animated, these demons are starving with ever increasing mouths to feed and a stomach that never fills. Anything a hellmaw devours becomes a part of it so long as it has a mouth or limbs. Eating as much as they can, they will sooner devour a freshly killed or even nearby rotting corpse rather than even respond to an active aggressor until their latest meal is consumed, using the new flesh and parts to repair whatever damage has befallen it as it feasted.

Details: Hellmaws eat indiscriminately. They will consume human, inhuman, and animals all the same. If it has any signs of life mundane or supernatural it is found to be food. As these animated ritual fallouts search for prey, they will consistently appear to flex and test every new part they acquire from eating, even vocalizations leading to them being quite the loud cacophony depending on how much they've consumed.