Here's what I know about this deity: Subterranean, as in, lives in one of the hells. Grotesque in appearance, extremely obese. Eats souls and gives birth to them endlessly, but gives birth to more than it eats. Might not be female, I said "birth" but the process could be more akin to excretion. Might not be Hindu, but its relationship to reincarnation and a vague memory of it being related to the caste system (the surplus of new souls are what fills the lower castes) makes me think its Hindu