Grey is a lonesome man who travels around the world, searching for clues to help locate the base of the Darke Knights. He is strong willed and constantly aims to bring goodness to the world. He is shown to be quite smart and deductive, and it has been hinted that he has been a detective previously, although he prefers not to talk about his past. Grey primary colour choice is grey, suiting his name. His standard attire comprises of a cloak, under which he wears his three swords and a formal vest. He tends to wear hats which cover his face partly.