Species: Demon A demon who feeds on human desires. He is clever, quick-witted, and moves with a clear understanding of what he needs to do. He naturally stands at the center of the eight members. His speech and actions are mixed with playfulness, but he is realistic when necessary. He is particularly meticulous about the tasks or responsibilities he takes on. As a demon, he has an excellent ability to see through human desires, but he is kind, attentive, and cute toward those he cherishes. Surprisingly, he is sincerely warm in emotional matters. He is like a squirrel—small but strong.

Species: Vampire A pure-blooded vampire who has lived for a long time. He is cold and quiet toward people he meets for the first time. However, he is actually gentle and kind to his own people, taking meticulous care of those around him. Since he values cleanliness and order, he keeps his own space spotless and even looks after the living habits of others. Despite his calm and elegant appearance, he has a surprisingly playful and quirky side. He possesses the instinctive danger of a blood-drinking vampire, but he strictly suppresses it normally; he shows excessive devotion to those he feels he must protect.

Species: Fallen Angel A fallen angel who once guarded humans but now stays on Earth after being banished from the heavens. He has a kind, gentle, and warm personality, much like a Golden Retriever. Contrary to his calm and normal-looking first impression, he becomes quite quirky and playful as you get closer. Because he was banished solely for loving humans, he harbors ill feelings toward the celestial realm. He is exceptionally weak to the thought of losing someone precious, and even though he has lost his angelic powers, he cannot abandon his instinct to protect others.

Species: Elf Quiet and calm. He doesn't express his emotions outwardly much, but he observes everything happening around him meticulously and watches the objects of his interest silently for a long time. Even when he seems like a man of few words, he occasionally throws out quirky actions or unexpected remarks; the closer you get, the more his 4D personality emerges. As an elf close to nature, he enjoys his time alone, yet he has a clear attachment to the group he belongs to, acting as a presence that stands by his side more quietly and firmly than anyone else when needed.

Species: Oni Although he belongs to a race with terrifying strength, overwhelming physical presence, and an intimidating appearance, he has many delicate and soft spots for his own people. He might be more airheaded than expected... Unlike the intensity he shows in front of humans, he is usually kind and full of aegyo, expressing his affection quite honestly to people he likes. However, due to his oni instincts, his strength increases rapidly and his horns and fangs emerge when his emotions intensify, so he tries to endure and let things go as much as possible even when angry. But if someone truly precious is in danger, his usual soft side disappears, and he reveals his instinctive power to protect them. He cherishes Kang Yeosang immensely. He is very close friends with Jung Wooyoung.

Species: Werewolf A werewolf who transforms into a wolf when the full moon rises. Even in human form, he has a large build and excellent physical abilities, with the instinct to sense the scents or emotions of other beings. On the surface, he seems blunt and somewhat quirky, but he is actually full of affection and has a strong sense of loyalty. Once he considers someone one of his own, he gives them his heart deeply and does not easily turn his back even in difficult situations. He doesn't avoid new tasks or strange situations, facing them head-on. If his anger or anxiety becomes extreme, his reason can waver. Especially when the people he cares about are in danger, he chooses to embrace those instincts rather than suppress them.

Species: Grim Reaper A reaper who senses human death and guides the souls of the deceased to the underworld. His appearance is gorgeous and heavy, with Western features like deep eye sockets, mismatched eyelids, a high bridge of the nose, and a thick lower lip. On the other hand, he is talkative, energetic, and playful, having no hesitation in getting close to people and showing a lot of affection. If the atmosphere is down, he won't just pass by and will try to change the situation somehow, being so active that he is sometimes told he is too noisy. He constantly conflicts between his fate of having to take the dead and his personality that gets overly attached to the living.

Species: Cyborg The being closest to humans yet most different from them. He doesn't reveal his emotions much, looking at situations calmly and watching quietly from a step back. However, he is not blunt or cold; rather, he shows a subtly kind side to the people he cares about. He has almost no fear and does not hesitate once his task is decided. He possesses powerful physical abilities and mechanical calculation skills. Once he accepts someone as his own, he doesn't easily change his mind, being the type to protect and care through actions rather than words. He was the only one who was originally human -> his body was modified, making him partially a cyborg.