It is possible that a goddess entered the dungeon thousands of years ago, used her arcane on him and the Dungeon made him so angry that he decided to absorb the goddess, then the goddess would be reborn as a hybrid between a monster and a god that lives on the top floor. from the dungeon. Surely I am wrong and it is not like that but I think it could be. I mean why else does the dungeon hate gods enough to summon black monsters? In addition, it would explain the birth of monsters as if they were their children, as humans and other races are children of the gods. And if we remember, Olivas Act said that he died and then "she" revived him as she did with Filvis. Revis also asked Olivas if he really saw her as a goddess, which would mean that maybe she is a corrupted goddess like the demi spirits.