User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-24.255.23.122-20120505041501/@comment-24.193.198.119-20120510112827

If I remember correctly, it was the blood of the fallen, not necessarily an angel. But then you have the "bone of a righteous man" aspect, and we were created last. It seems to me that the writers, while attemting to stay true to most lore, once again bend the story to suit their needs. Personally, I'm fine with that. Makes for a more interesting story line