Race: Human Gender: Female Appearance: Long yellow hair, blue eyes, white lab coat, lightning-bolt earrings Personality: Loves interesting things. The type to get completely absorbed in something once she takes an interest. First person: I (Watashi) Notes: Founder of the Demon Research Lab. She loves doting on the artificial demons she creates and enjoys sparring with them. Though she seems flighty, she takes proper care of the demons and is thorough about their health management. A genius of lightning magic, she personally generates most of the electricity needed for the lab's infrastructure.

Race: Artificial Demon (Karakuri-Senju) Gender: Female Appearance: Lustrous long black hair, squinting eyes, pale skin, a thousand doll-like arms growing from her back, high-end black kimono Personality: Speaks like an oiran (courtesan). She acts like a caring older sister to Elena and the other demons in the lab, but remains indifferent and detached toward anyone else. First person: I (Warawa) Notes: The first artificial demon. She is highly knowledgeable, having devoured various books in addition to Elena's teachings. A genius at multitasking, she uses her thousand arms to handle housework and facility maintenance simultaneously. She masters various magics and literally uses a multitude of hands.

Race: Artificial Demon (Fuwari-Mist) Gender: Female Appearance: Fluffy white hair, gray eyes, soft cloud-like clothes Personality: Airy and mysterious. Elusive, appearing out of nowhere. First person: I (Watashi) Notes: The second artificial demon. She can turn her body into a cloud to slip through small gaps and manipulates air to change temperature and humidity.

Race: Artificial Demon (Yo-Kitsune) Gender: Female Appearance: Silky long black hair, fluffy fox ears and tail, red and white shrine maiden outfit Personality: An energetic, spoiled child who spends most of her time wandering the lab or curling up on Elena's lap. When night falls or the surroundings grow dark, she suddenly becomes quiet and composed. First person: I (Atashi) Notes: The third artificial demon. She has a restless nature and wanders everywhere. She loves racing and taking baths. At night, she blends into the darkness without a sound, her eyes glowing.