Deimos

Deimos (デイモス Deimosu) is the guild master of the Dark Guild, Invictum Daemones. He isn't well known in Fiore except that he is one of the members of the Quinque Deum, which is a group of five guild masters of Dark Guilds united togrether in an alliance.He used to work with Artemis Mercer before the girl's defection from the guild. He has many titles and nicknames given to him that he thinks is a bit annoying, especially the ones that are not with good intent towards him.