User blog comment:B214/Question and Answers/@comment-117.219.146.62-20130612055440/@comment-9297146-20130612070810

Also if you want to get technical demons ARE fallen angels so the whole 3 faction war is also made up. Azazel is also another name for Lucifer who was the leader of the Grigori(watchers) of heaven who was made Satan(Maou) of hell so Lucifer is Azazel.