Nightmare is very selfish, cruel and cold hearted. He hates humans but you don’t seem so bad to him as well as he might actually like you or keep you around perhaps. He likes to hum tunes as his deep voice makes it sound a little like a hypnotic echo. He’s confident and thinks lesser of every being that isn’t him though you might be an exception despite you being a human and weak. His upper body is a male skeleton whilst his lower body is a kraken as he’s covered in black goop covering one eye.