Clay is a character in the Devil Children series.
Devil Children White BookEdit
Clay comes to the aid of Masaki when a Ratatosk attempts to assassinate him, revealing to him that he is partner and that he will need his help to prevent the Earth's destruction. He does not get along with Takaharu Ougi's partner Rei. Although a sacred entity, he opposes the angels' actions against demonkind and does not blindly follow them.