Gilles de Rais
Known as Bluebeard, a human who died 400 years ago and became a demon. He is currently a Nephilim subordinate to the Great Demon Duke Baalberith. His previous incarnation was the general who served under Jeanne d'Arc, his full name being: "Baron de Rais and Count of Brienne, Gilles de Monmorency-Laval". He is in love with Jeanne and seeks power in order to break the angels hold over her and make her human again.