Satan is a major character in the story, "DxD: FINAL." He is the strongest demon in existence, known as the Apocrypha Genius Loci, and God's Monster. He was originally a being created by God to obliterate humans when they had strayed from His guidance, heralded as the "Great Abbadon," or the "Devourer of Worlds." Prior to his demise in the Great War, he was known as the King of the World Betwixt Worlds (Limbo), and is recorded as the Original Angel, having been the first-born creation of God.