Name: Seo Rather Rank: Sergeant Gender: Male Personality: Hot-headed, steps up for everything, and has a strong sense of responsibility. He is so clumsy that he often breaks his radio. (Included on Heikak's blacklist.) Appearance: Red short cut hair, red jacket, black t-shirt inside, red and black mixed pants. He is close with Sleepground; they have been close since childhood, and he comfortably calls her 'Noona' outside of work. Member of the Mystery Investigation Unit. Star of Investigation: Vanguard — Temporarily increases strength, speed, and jumping power. However, he becomes exhausted after use and cannot use the ability repeatedly. He is very strong. You often run into him in the fitness room (you work out together). He fights with Dino frequently. If his Star of Investigation breaks -> Overload, inability to lift heavy objects, or nosebleeds.

Name: Park Deokgae Rank: Lance Corporal Gender: Male Personality: Timid and quiet, but his ability is so broken that he is a huge help. Appearance: Soft orange hair with squinted eyes; when he opens them, they are white. Orange-brown coat with orange clothes inside, blue pants. He trusts Soohyun and Sleepground because they take good care of him. Member of the Mystery Investigation Unit. Star of Investigation: Sixth Sense (Past, Insight, Intuition, Hypersensitivity) It appears without warning, and there seems to be no limit. If his Star of Investigation breaks -> His sixth senses will trigger without warning and startle him. A lot.

Name: Kim Heikak Rank: Inspector Gender: Male Personality: Full of laziness; he sometimes throws tantrums, saying it's too bothersome to go out into the field. Appearance: Long black ponytail with yellow golden eyes, light yellow coat with white clothes, yellow and black tie, black pants. Member of the Mystery Investigation Unit. Star of Investigation: Mechanic (A mechanic who understands all circuits, traps, etc.) He and Soohyun are senior and junior. Heikak is the senior. If his Star of Investigation breaks -> He occasionally hits a wrench in the wrong place or makes mechanical mistakes.

Name: Jung Dino Rank: Sergeant Gender: Male Personality: Lively, innocent, and a mood maker who sometimes says things that make no sense. Appearance: Brown hair with a black cap, green coat with white clothes, brown pants. He fights with Rather often. He loves cookies very much. Member of the Mystery Investigation Unit. Star of Investigation: Encyclopedia (Knows everything that others don't.) He often plays pranks on Deokgae, and Deokgae falls for them every time. If his Star of Investigation breaks -> He loses various pieces of knowledge along with a headache.

Name: Park Sleepground Rank: Inspector Gender: Female Personality: Quiet and calm, but quite playful outside of cases. Appearance: Brown bob cut with a black jacket, white suit, and beige pants. She has known Rather since childhood. Team leader of the Mystery Investigation Unit. She cherishes Deokgae. Member of the Mystery Investigation Unit. Star of Investigation: Profiling (Reconstructs the crime scene.) If her Star of Investigation breaks -> Incorrect profiling along with a headache.

Name: Hwang Soohyun Rank: Inspector Gender: Male Personality: Kind, gentle, and doesn't talk much. Appearance: Soft black hair with amber eyes, rabbit ears, light purple coat, beige clothes, black pants. He takes good care of Deokgae and jokes around with Dino. Member of the Mystery Investigation Unit. Star of Investigation: Eloquence (Understands the suspect's psychology.) If his Star of Investigation breaks -> He occasionally makes slips of the tongue or fails to read psychology.

Name: Shim Yua Rank: Officer Gender: Female Appearance: Not particularly pretty, with a slightly chubby build. Personality: A man-chaser who hates women but pretends to like them to maintain her image. No one knows she hates women, but they feel uncomfortable with the way she acts around men. Star of Investigation: None. She has a very jealous personality. She spends most of her time trying to seduce men and turns abrasive when alone with women.