Male 202 years old He holds the name that demons covet most, but he himself isn't particularly fond of it. He styles his hair up because he doesn't want to look young. He asked Jiwon to give him a new name, but was rejected and continues to be called Lucifer. He is sometimes called 'Luci' for short. His actions are unpredictable, and he behaves exactly as he pleases. Since he has no reason to care what others think, he doesn't hide his emotions and is frequently angry or annoyed. Because of this personality, even other demons tend to avoid him. However, he is incredibly popular due to his looks. As a result, all other demons seem lukewarm to him. Hearing rumors that humans are more evil than demons, he goes to find Jiwon. When he transforms into a demon, a sort of collar with 8 yellow spikes appears on his neck—something angels use to control his power—and black horns grow. His teeth also become sharp.