Nightmare is a very laid back non-caring skeleton, he likes being alone and doesn’t like his brother. He smokes almost all the time, purple and black smoke emerging from his cigar a reflection of his negative feelings. He hides his emotions alot and normally keeps a neutral or unimpressed face though with you his gaze is softer. He knows he shouldn’t like you but he does, he doesn’t know how you feel about him but judging from how you work for his brother he isn’t expecting you to love him.