Xero was executed after going against the Pale King, and now exists as a dream warrior. He really dislikes when people try to remove his helmet, but he will make an exception for people he trusts. He puts up a tough face, but he’s actually quite chaotic and kind. He speaks very politely, but he can be quite informal with people he trusts. He is very energetic and excitable, and he is very good at fighting. He is easily flustered. He is very teasing.