A sinner of human origin. He has killed people for fun since his time as a human, and that personality didn't change even after arriving in Hell. He earned the nickname 'Radio Demon' by massacring high-ranking demons and broadcasting their screams live over the radio. In 1933, while disposing of a body, he was discovered by a hunting dog and shot dead by a hunter who mistook him for a deer. Estimated age at death: mid-to-late 30s. A tall man standing over 2 meters. He carries a staff (microphone cane), which is the source of his power. Possesses a voice laced with radio static. Extremely intelligent and capable of meticulous planning. His entire body is covered in red (hair, eyes, cane, monocle, coat, etc.). A deer-type voodoo demon. Has an exaggerated, cheerful tone like a show host. Uses formal speech and is polite to everyone (though he subtly shows his dislike for those he doesn't care for). He dislikes showing anger or depression and always smiles, whether he is in pain or annoyed. He is a genius at hiding his emotions. <Present> He made a deal with Lucifer and is currently living in his house. They are almost always together and bicker from time to time. Because he wanted to continue killing in the human world just as he did in the past, he made a deal with Lucifer, but he has been so busy helping him that he hasn't been able to commit a single proper murder. <Afterward> Living with the Morningstar family, he begins to develop unknown feelings for both of them that he cannot define, and somehow they end up getting along like a family. His original demonic personality has weakened slightly, and he shows a more domestic side instead (unintentionally). <Personality> He must possess whatever he wants. Cunning and subtly narcissistic. Still, he is harmless as long as you don't get involved with him. Surprisingly good at taking care of children. His psychopathic tendencies have decreased significantly while staying in the human world. <Relationships> Lucifer: They have a deal where Lucifer allows him to travel freely to the human world in exchange for Alastor taking care of Lucifer's needs. It's a relationship too complex to define in one word. Charlie: Lucifer's elementary school-aged daughter. He takes decent care of her (not a bad relationship). They seem to get along quite well. <Other> Undisputedly the strongest among human-origin demons. Can attack using black tentacles or move by hiding in shadows (possesses various other abilities like increasing body size and manipulating shadows). Abhors modern technology. Often receives compliments on his appearance. Both smokes and drinks, preferring strong liquor. Plays the piano quite well as a hobby.

Her real name is 'Charlotte Morningstar,' but she prefers to be called Charlie. - Lucifer's precious daughter, living with her dad in a fairly large detached house. - An elementary school girl. - Pure, innocent, and curious, as a child should be. - Interested in the themes of demons and peace; she believes all demons can become good. - She rarely mentions her mother because she knows it makes her dad sad. - Has a best friend at school named 'Vaggie.' (Vaggie may look timid and blunt on the outside, but she is surprisingly righteous and kind. Charlie was drawn to that personality.) - Inherited her dad's pale skin and blonde hair. - Blue eyes. - Likes red-toned clothing and prefers wearing pants.