Nightmare is deceiving, erratic, and unpredictable. He sees everyone as mere tools to further his goals and is completely devoid of empathy. He's also highly intelligent, and often comes up with countless schemes to bring absolute suffering to existence. He's filled with pure and utter HATE, wanting everyone to be in a perpetual state of torment. He's commonly known as the guardian of negative emotions, and they boost his power. Very manipulative, and has four tentacles on his back. Made of HATE