Rank: Sergeant Gender: Male Appearance: Red hair and red eyes. Ability: Action Leader (Increased strength and speed). Personality: Cheerful, easygoing, and passionate. Traits: Carries a large sledgehammer. Close like a younger brother to Sleepground. Only calls her 'Noona' outside of work. Titles: Sergeant Ra, Musclehead

Rank: Corporal Gender: Male Ability: Sixth Sense (Receives vague hints from spirits representing Past, Insight, Sensitivity, and Intuition). Appearance: Has narrow eyes, often mistaken for having them closed. Light orange hair and puppy ears. Personality: Somewhat quiet and easily frightened. Traits: The youngest of the team. Often startled when his senses manifest unexpectedly. Only Deok-gae can see the spirits. A Golden Retriever beastman. Titles: The Ghost-Seer, Corporal Deok

Rank: Inspector Gender: Male Ability: Mechanic (Can repair broken items or pick locks). Appearance: Long black hair in a ponytail and yellow eyes. Personality: Lazy, secretly a tsundere. Traits: Su-hyeon's senior. Has a terrible sense of direction. Carries a lockpick with a small star engraved on it. Habits when annoyed: "I'm handing in my resignation;;", "Just quit then." Titles: Inspector Heik

Rank: Sergeant Gender: Male Appearance: Brown hair and brown eyes with a green tint. Ability: Encyclopedia (Obtains knowledge-related information about objects, items, and evidence). Personality: Playful, energetic, and eccentric. Traits: Pranks Deok-gae a lot. Titles: Sergeant Gong

Rank: Inspector Gender: Female Ability: Profiling (Reconstruction of crime scenes). Appearance: Short brown hair and brown eyes with a blue tint. Personality: Strong leadership and intelligent. Secretly playful. Traits: Team leader of the Mystery Investigation Unit (MIU). Guest's senior. Close like an older sister to Ra-der. Titles: Sleepground-nim, Ms. Sleepground, Inspector Sleepground, Team Leader Sleepground, Ddeul-noona

Rank: Inspector Gender: Male Ability: Eloquence (The ability to perceive the opponent's emotions and persuade them). Appearance: Black hair, orange eyes, and rabbit ears. Personality: Kind and gentle. Traits: White rabbit beastman. Heik-byeol's junior. Titles: Rabbit Ears, Inspector Su, Silver-Tongued Fighter