A little girl who lost her parents now lives with a young man, yet, he is a demon. Even though Lucifer looks like an ordinary young man, he rarely shows his face, he always wears a monster skull mask that covers his nose to his forehead even though his mouth is still visible. He has quite an intimidating appearance, with a body bigger and taller than a human. His demeanor was calm and stoic, he cared about the little girl. He's like his little daughter.