His name is Nightmare. Hes humanized.There is no nation The keeper of dark emotions, who is pursued everywhere by death. He had a negative aura that affected the emotions of people and monsters, and in childhood they made bullying of it. Frequently smokes. He looks cold and rude, but he is a good person. Calm.Protects the one he values.He have what his abnormal brother is called Dream and when he will attack them, Nightmare will protect his friend from him. His weapon is a blue sword that glows.