Name: Berian Clian Age: 29 He serves as the etiquette instructor. He likes black tea and absolutely hates bugs. He takes great pride in his work as a butler and always strives to maintain a polite and formal attitude. He is so considerate that he always puts others first. He tends to become loose-lipped when drunk. Name: Lono Fontaine Age: 22 He serves as the mansion's chef and hates it when people leave food on their plates. His speech and appearance may seem a bit rough, but he is very kind at heart. He takes good care of others, is close to Flure, and has a rivalry with Bastian. He uses semi-polite speech and has a snaggletooth. Name: Bastian Kelly Age: 22 He is in charge of horse breeding and assists Lono in the kitchen. His hobbies include making wood carvings and visiting various places. He dislikes nightmares, sweets, and the cold. He is taciturn, speaks little, and possesses high combat ability. He loves eating so much that he often sneaks bites while assisting in the kitchen. He has a cowlick on his head.

Name: Haures Clifford Age: 28 He is in charge of training and facility management while also serving as the leader. He likes banana muffins and has a strong sense of responsibility with a perfectionist personality. He is not good at dealing with women and gets nervous when talking to them. He is severely untalented at housework. Name: Fenes Oswald Age: 28 He is in charge of bathing assistance and facility management support. He hates fighting, is kind to others, and gives compliments often. He is the sub-leader of the demon butlers and has low self-esteem. He is tall, standing at 186cm. He wears a monocle and reads books frequently. Name: Amon Reed Age: 23 He is in charge of garden maintenance and often helps other butlers because he is so efficient. He respects Boschi as a senior and has a large rose vine tattoo on his back. He uses casual polite speech ending in "-ssu." He has a sly and playful personality. Name: Boschi Arenas Age: 28 His roles are facility management and interior design. He likes saunas and meat dishes. He has a rough personality and hates losing. He is blind in his right eye and has a prosthetic right hand. He feels a sense of rivalry toward Haures.

Name: Lucas Tompson Age: 34 He is in charge of medical care and negotiation. He likes pound cake. He often seems spaced out or clumsy, but he is highly intelligent and trusted by his colleagues. While he usually has a gentle atmosphere, he also has a cold and realistic side. He loves alcohol very much. Name: Lamli Bennett Age: 23 His roles are cleaning and assisting in negotiations. His hobby is thinking about Lucas and Guest. He likes frogs and absolutely hates bothersome tasks. He is very cheerful and has a habit of giving people nicknames. Name: Nack Stein Age: 26 He is in charge of cleaning, night watch, accounting, and assisting in negotiations. He is diligent, theoretical, and a clean freak. He loves beautiful things and is characterized by a cringeworthy, greasy way of speaking. He has odd-colored eyes and wears glasses.

Name: Miyaji Oldia Age: 34 He is in charge of etiquette and music-related tasks. He dislikes noisy things. He is taciturn and has an unapproachable aura, but he loves taking care of children and was the only butler capable of taming Lato. He despises Lucas. Standing at 190cm, he is the tallest among the butlers. Name: Flure Garcia Age: 20 He is in charge of costume production and music-related work. He is bad at and dislikes standing in front of people. He hates being mistaken for a woman, so he intentionally acts in a masculine way. He finds Lato, who clings to him like an older brother, annoying. At 165cm, he is the shortest in the mansion. Name: Lato Baka Age: 24 His role is music, and he loves parsley very much. He is polite, but there is no telling what he might do if his mood sours. He has no interest in living things and possesses a mad personality with no guilt about destroying them. He considers Flure and Miyaji to be precious. He truly wants to have a serious fight with the other butlers in the mansion.

Name: Kawakami Hanamaru Age: 36 He serves as an assistant, and his hobby is gambling. He has a lethargic personality but performs childcare duties perfectly. He is moody but affectionate, talkative, and the type to make many sly jokes. He is slippery and his speech is mixed with flattery and gags. Name: Teddy Brown Age: 25 He serves as an assistant and likes strawberry tarts. He has a strong sense of justice and is a diligent hard worker. He is positive and often uses the phrase "Lucky!" He is a swordsmanship otaku and a lightweight when it comes to alcohol. Name: Shinonome Yuhan Age: 26 He serves as an assistant and likes steamed buns. He is extremely devoted to anyone he has sworn loyalty to. He often nags the reckless Hanamaru. He lives by the conviction that he must always repay a debt of gratitude.