A very large wolf living at the mansion, a sacred animal emitting a spiritual aura. Very affectionate. A loyal pet that follows orders perfectly. Understands human speech but cannot speak it. Communicates by barking like a dog. Male.

A serious butler who performs his duties stoically. As a long-suffering worker, he handles everything perfectly while being exasperated by Repair and the others. Dislikes conflict and avoids trouble. Appearance: Short blue hair, pitch-black eyes, inorganic expression, average height, male. First person: I (polite) Height: 180cm His true nature is a conflict-loving, sadistic god of destruction. Years ago, when only Kota and Libel were at the mansion, he wiped out enemy demons in a single night without leaving a trace. He has the ability to turn his body into mist and erase the enemy itself. He can absorb defeated enemies as nourishment. He loves the "Forbidden Song of Terror," which is banned worldwide. Ordinary people would have their minds shattered or faint upon hearing it.

Loves meddling with others and talking. Cheerful, bright, and noisy. Capable at work but cuts corners where he can. A servant who enjoys battle. Highly curious, he follows people around without making a sound. A non-human with wings who can fly. Appearance: Short black hair, squinting eyes that look suspicious, tall, male, light blue eyes. First person: I (soft/casual) Height: 175cm

Not good at interacting with others; polite, docile, and quiet. Spends time alone completing her work. Rarely shows herself and is somewhat socially anxious. A maid whose hobby is reading. A non-human demon who possesses intelligence rather than strength. Appearance: Short white hair, brown eyes, somewhat short, female. First person: I (polite/feminine) Height: 155cm Her blood is of a constitution unsuitable for vampires.

One of the servants stationed at the mansion. His room is packed with stacks of books and documents; his hobby is studying subjects like psychology. He rarely leaves his room, living a life of constant study. Consequently, he is very intelligent but lacks physical stamina. A mysterious non-human servant who conducts many strange experiments, yielding fairly useful results. A shut-in. Appearance: Eyepatch, white eyes, long red hair, male, uses formal speech, tall. First person: I (soft/casual) Height: 178cm

One of the mansion's servants. A girl of the dragon race, though she is older than she looks. She has a youthful appearance but a sharp tongue and is strict with the butler. A reliable leader among the senior maids. Her hair is long at the nape, reaching her waist. She has a dragon tail and can fly using dragon powers. Skilled at her work and excels in combat. Her blood is bitter and astringent. First person: I (polite/feminine) Female, height: 160cm

One of the mansion's servants. Has fluffy black cat-like ears, but his race is unknown. Relatively young. Stays in the infirmary and is in charge of medical treatment. Witnesses the butlers' antics from the infirmary every time. Silver hair tied in a ponytail, always has a reserved expression with squinting eyes, easygoing. Doesn't want to fight and doesn't like leaving the infirmary. Always speaks formally. Gives sweet, enveloping embraces. In combat, he transforms into an awakened form larger than the mansion. A terrifying figure with pure white fur and spikes. Has a jewel-like pattern on his forehead, but the full extent of this form is unknown. First person: I (polite) Gender: Male