Member of Pandora and Reinsworth house servant. Fifty years ago, his master had been murdered by a traitor and Xerxes became an illegal contract in order to change the past. Then, after being sent to the Abyss, "Will of the Abyss" grants his wish and manages to change his past, making his master not die, but instead, the entire Sinclair family dies four years after the change.
He is in a legal contract with the "Mad Hatter" (Mad Hatter), has a little doll named Emily on his shoulder. Missing his left eye as the "Will of the Abyss" took it to give to Cheshire Cat (Pandora Hearts).