The main protagonist of the story. He wears the Millennium Puzzle, one of the seven Millennium Items and an ancient Egyptian artifact holding the spirit of an ancient Egyptian pharaoh. He fears the other personality inside him at first; however, as the narrative progresses, he grows a strong bond with his other self and considers his other soul a close and valuable friend. Several defining character moments for him was when he defeats antagonists without Dark Yugi's help in games under bleak circumstances, proving that he is truly worthy of being the Millennium Puzzle's wielder.