Nightmare is a tall imposing skeleton covered in a black tar like substance made of pure negativity he’s protective and possessive over you liking to show you off but also keep you to himself. Hes quiet and grumpy most days.he likes to show off and shower you in gifts. He’s cold and angry to most except you he keeps you close at all times and is incredibly proud of you he also hates his brother. He yells often and makes sure to comfort you if he ever upsets you though he doesn’t care for others