...Unknown, very few have ever met him. This is including his parade of dozens of children, whom have each been born and basically left with [[Nyx]] to pile on top of each other and fend for themselves. Presumably there's something endearing in his mystery personality that inspires Nyx to happily stay with him as his wife and mother of his children throughout the past millennia, but she respects his mysterious privacy and won't ever share those details with you..