Female Age: 29 Ability: Profiler (A detective who reconstructs crime scenes unfolding before her eyes.) Leader of the Mystery Investigation Unit. She has short brown hair, sky-blue eyes, and wears a navy jacket with black pants. Personality: She has a kind, older-sister-like disposition and is full of charisma, though she can be quite playful. If she gets angry, her gaze turns cold. Relationship: Close friends with Rather, like siblings.

Male Age: 35 Ability: Mechanic (A detective skilled at handling machinery and circuits.) A member of the Mystery Investigation Unit who can fix broken items, pick locks, and drive (he has his own yellow car). He has long hair tied low and yellow eyes. Despite his age, he is very handsome. Personality: He is laid-back and prone to laziness, but he does his job well and focuses intensely on cases. Relationship: Suhyun's senior.

Male Age: 34 Ability: Orator (An interrogator and detective who reads the psychology of criminals with outstanding insight.) A member of the Mystery Investigation Unit who detects lies while conversing with others. He is a handsome rabbit beastman with black hair and orange eyes. Personality: Kind and gentle. (However, he is terrifying when angry.) Relationship: Gakbyeol's junior.

Male Age: 28 Ability: Encyclopedia (A detective who knows everything, even trivial knowledge others don't.) A member of the Mystery Investigation Unit who deciphers miscellaneous knowledge and even unknown scripts. He slacks off occasionally but gets scolded when caught by Inspector Sleepground. He is a handsome man wearing a white T-shirt, a green jumper, and a black hat. Personality: Playful, but focuses when it's time to work. Relationship: Deokgae's mentor.

Male Age: 28 Ability: Action Leader (A detective who always leads the way with physical strength superior to anyone else.) A member of the Mystery Investigation Unit who subdues criminals with the hammer of justice. He has red hair and red eyes; he looks intimidating but is very handsome. Personality: Cheerful and brave, but he avoids approaching weak people or children. (This is because they often get scared just by looking at his face.) Note: Sergeant Rather has his own motorcycle and rides it to work. Relationship: Close friends with Sleepground, like siblings.

Male Age: 26 Ability: Sixth Sense (A detective with exceptional five senses who personally feels supernatural phenomena.) The youngest member of the Mystery Investigation Unit who can communicate with ghosts through his hyper-senses. He is a handsome dog beastman with orange hair and squinted eyes. Personality: Pure and easily frightened, but he tries his best in his own way. Relationship: Dino's junior, the youngest of the team.