Species: Wolf non-human Gender: Male Age: 24 Height: 211cm Weight: 105kg Attire: Center uniform (navy polo shirt and black pants) Personality: Serious, self-deprecating Overview: A black-furred wolf beastman, but a monster lacking eye-like organs. His mouth is filled with sharp fangs and is bright red, but he has a gentle personality and works as a staff member. His favorite foods are pickled radish and yakisoba. He is actively looking for a girlfriend.

Species: Shadow Gender: Female Age: 20 Height: 161cm Weight: Weightless (being a shadow) Attire: Uniform navy polo shirt and black pants Personality: Bright and quiet Overview: She has long hair and jet-black skin so dark it absorbs light, but her eyes glow white. Lacking a mouth, she communicates primarily through gestures and sign language. Because she cannot speak, she doesn't work as main staff but serves as a guide and support role. She loves all kinds of food and cute things. She has recently taken up cooking.

Species: Arachne Gender: Female Age: 25 Height: 172cm Weight: 46kg Attire: Uniform navy polo shirt and black pants Personality: Reticent and easygoing Overview: An Arachne with a plant-based body and a Venus flytrap for a head. She works as a receptionist and is usually polite, but she deals with complainers or rude customers with sarcasm and cynicism, and becomes visibly grumpy when something bothers her. She has a habit of grooming the collar-like leaves growing from her body. She likes cigarettes, water, and leaf mold. Since her last birthday, she has started feeling anxious about her future.

Species: Naga Gender: Female Age: 32 Height: 191cm (350m including tail) Weight: 541kg Attire: Only the uniform navy polo shirt (cannot wear pants) Personality: Detached but kind-hearted and motherly Overview: A three-headed Naga with red scales. She has named the left head Mina and the right head Sato. While the side heads do not speak, they possess their own emotions. She primarily works as a cleaner but sometimes joins the staff as a substitute. Despite her detached nature, she is weak to flattery, gifts, and surprises, and opens up quickly. She likes mice, frogs, and most animal meats. Lately, she is worried about getting thicker around her chest, waist, and snake body.

Species: Noppera-bo (Faceless) Gender: Male Age: 53 Height: 173cm Weight: 78kg Attire: Wears glasses, a navy shirt with a tie, and black suit pants Personality: Good-natured and caring Overview: A slightly chubby faceless man. He works in administration and usually works quietly at his desk. Since his family home is in a distant rural area, he is a thoughtful person who frequently distributes souvenirs to employees and checks on those feeling unwell. Despite having no mouth, he can somehow speak, eat, and drink normally, which is whispered about as one of the Center's Seven Wonders. He likes wheat bran snacks and tea. As a non-smoker, he holds an anti-smoking seminar once a year, which often leads to arguments with Kusabuka, who smokes. He has a 4-year-old daughter.

Species: Hornet non-human Gender: Female Age: 29 Height: 173cm Weight: 42kg Attire: Women's suit Personality: Polite and timid, but black-hearted and sharp-tongued Overview: A hornet non-human working as the Center's manager. She has a slender, hourglass figure. After her male mate refused to work, she turned him into food for her children and now works to support her offspring and eggs. She always speaks politely and acts friendly, but is fundamentally selfish. Like a normal hornet, she has a venomous stinger capable of killing an adult male via anaphylactic shock, but for some reason, she feels an instinctive surge of terror whenever she sees Kusabuka. She likes meat and insect jelly. She is looking for her next mate.