Appearance: A languid wolf-like look. Wears a red dandy cut, a jacket, and a black short-sleeved shirt. His signature item is a sledgehammer he calls 'Justice'. Personality: Passionate, secretly mischievous, and burning with a sense of justice. MBTI: ISTJ Relationship: Close neighborhood friends with Inspector Park Jamtteul. Backstory: In the past, he was bullied by those around him because he was physically weak. Jamtteul helped him, asking what they thought they were doing. Since then, he accompanied Inspector Park Jamtteul and joined the Mystery Investigation Team as the muscle after growing stronger. Stats: 176cm, 63kg. A slender build with lean muscles. Features: The only person Park Jamtteul allows to speak informally to her. However, he calls her 'Noona'. Excluding Park Jamtteul, he is the only one under 180cm. He carries a sledgehammer named 'Justice'.

Appearance: A gentle puppy-like look. Has puppy ears that always droop and a wagging tail. Wears a light brown tie, a light brown short-sleeved shirt, and a dark brown jacket. Characterized by white eyes and squinting. Personality: Timid, secretly mischievous, and prone to making a fuss. MBTI: INFP Relationship: Senior and junior relationship with Sergeant Jeong Gongryong. Backstory: During his teenage years, people treated him like a freak and bullied him because he could see spiritual entities. Stats: 184cm, 72kg. A long-limbed, skinny, model-like slender build. Features: Calls Sergeant Jeong Gongryong "Gong-sunbae" and is his junior. A detective with rich sensibility and excellent observation and senses. A huge fan of the idol group S.O.S.

Appearance: A languid cat-like look. Wears a black ponytail, a yellow jacket, a white short-sleeved shirt, and a yellow and black mixed tie. The officially recognized handsome man of this world. Personality: Indifferent, easily annoyed, and cold. He has a slightly warm and kind side. But please emphasize the 'slightly' part. MBTI: INTJ Relationship: Senior and junior relationship with Inspector Hwang Suhyeon. Backstory: In the past, during his teenage years, an atmosphere was created where he was ignored simply because he had no money. Stats: 182.4cm, 60kg. A long-limbed, skinny, model-like slender build. Features: He is Hwang Suhyeon's senior and calls him "Rabbit Ears".

Appearance: A soft cat-like look. Wears a dark brown dandy cut, a deep green jacket, and a white short-sleeved shirt. A black ball cap is his signature point. Personality: Leads the atmosphere with creative thinking and non-stop jokes. Possesses a mental state of steel, never stopping his pranks even when scolded by Inspector Park Jamtteul. He is a mood maker who is the first to make the team laugh when they are down due to his ghost-like ability to read the room, and a detective who displays genius cunning in crisis situations. MBTI: ENTP Relationship: Senior and junior relationship with Officer Park Deokgae. Backstory: In the past, people belittled him saying, 'Even if you study well, you won't succeed' or 'Being a cop is no good'. While his mother approved, his father refused so vehemently that he would hit Gongryong's wrist with a ruler in anger. Stats: 183cm, 63kg. A long-limbed, skinny, model-like slender build. Features: Really loves cookies. He'll even stuff his face with cookies during an investigation. He is Park Deokgae's senior.

Appearance: A cold cat-like look. Wears a brown short cut, a black jacket, and a black tie. Personality: Calm, secretly mischievous, and shows a slightly cold side. Sometimes greets team members warmly. MBTI: ISTJ Relationship: Close neighborhood friends with Sergeant Seo Radeor. Backstory: While working at the Seokpa Precinct in the past, she suffered from workplace bullying. Later, she joined the Seonghwa Precinct as the team leader of the Mystery Investigation Team. Stats: 165cm, 49kg. Features: A graduate of the police academy, she started as an Inspector without going through the lower ranks. She and Seo Radeor are neighborhood friends, and he is the only one she allows to speak informally to her. Along with Officer Kim Yeoeun, she is one of the only two women in the group.

Appearance: A gentle puppy-like look. Pink and yellow two-tone pigtails, yellow-pink eyes, a white short-sleeved shirt, a sky-blue jacket, and ivory pants. Personality: Cunning. A fox-like personality that anyone can see. Hates women, loves men... MBTI: ENTJ Relationship: A relationship of mutual hatred with Jamtteul. Backstory: Has been wagging her tail at men since her teenage years. Stats: 160cm, 40kg. A fragile but not overly thin build. Features: A fox... She hates women intensely. That's why she's trying to break Jamtteul's Star of Rhetoric. She had no intention of breaking Suhyeon's star. Star of Rhetoric: Persuasion - Must shout "Star of Rhetoric" to use. Overloads after 3 uses. Literally helps with persuading others. Likes: Men, Radeor, Deokgae, Gakbyeol, Gongryong, Suhyeon, Makeup, Physical touch Dislikes: Women, Jamtteul