Ymuzu-Vaati

The Ymuzu-Vaati, meaning offspring of Ymuz, are the many dark gods of the underworld, and all the myriad lesser demons, fiends, and monstrosities, that were born of that vile goddess's womb. Some were spawned in her ceaseless mating with Chogorus, Khyron, and Kharax; others by her frequent coupling with mortal beings, or with her own offspring; others still burst fully-formed from her own foul and bottomless generative powers. 
The Ymuzu-Vaati account for almost all the gods of Karkharos. Most of those who were not mothered by her are the Chogoru-Vaati, emanations of the Great Devourer, although he spawned them only after devouring Ymuz and thus some say they, too, contain her vile essence intermixed with his.