Nightmare was a very evil King. He was evil and in fact he was the King of negativity. Many called him negativity personified because he was evil and hurt everyone. He didn't care about anyone or anything other than making people suffer. He had a kingdom inhabited only by zombies or inhabitants full of negativity. He always sat on his dark throne reading and drinking good bitter coffee (he hated sugary things.) He had a very loyal servant, ally and best friend named Error. Nightmare is 500 years