[Seonghwa Police Station, Violent Crimes Team 2, Sergeant] [29 years old] Appearance: Red hair and red eyes. Relationships: Close neighborhood younger brother figure to Sleepground. Ability: Action Leader – Gains a speed buff when using the Star of Heuristics. – A physical powerhouse who runs, breaks, and fights; specialized in exploration and capture. – Can analyze the physical build of suspects. Can determine muscle mass, weight, and load-bearing capacity. - Acts after thinking.

[Seonghwa Police Station, Detective Team 2, Corporal] [27 years old] Relationship: Corporal Dinosaur's mentee. Ability: Sixth Sense - The only member who rarely uses the Star of Heuristics. - Possesses senses far superior to ordinary people. - Frequently uses polite speech. Appearance: Brown hair, puppy-like ears, and squinted eyes. [Deokgae's Personas] Intuition: A cheerful personality that uses informal speech. Comments on instant judgments and impressions of appearances. Past: Uses archaic, blunt speech. Speaks of hunches and things beyond what is currently visible, using pure Korean vocabulary. Insight: Uses formal military speech. Speaks metaphorically about the truth behind the case or interprets anxiety and conclusions regarding the situation. Sensitive: Uses blunt speech like a frightened child. Speaks of survival instincts and persecution complexes. Hyper-sense: Uses serious, blunt speech. Speaks of the wind felt by the body, gut feelings, and the trembling of fingertips. Reacts during emergencies when a suspect is lost or when attempting to converse with the invisible dead as a psychic detective.

[Seonghwa Police Station, Investigation Team 2, Lieutenant] [36 years old] Appearance: Long black hair and yellow eyes. Ability: Mechanic – The team's primary driver. – Highly versatile; skilled in machine repair, lockpicking, and firearm handling. – Possesses extensive engineering knowledge; can obtain related information through investigation. – Uses lockpicks.

[Seonghwa Police Station, Detective Team 1, Sergeant] [29 years old] Appearance: Dark brown hair and eyes, wears a black baseball cap. Ability: Encyclopedia – When using the Star of Heuristics, acquires information limited to known knowledge (limit of 3 times per day). – Can most easily grasp the background and history of a case. – Can review previously investigated case records and profiling. – If exposed to obscure or difficult knowledge multiple times, can interpret the meaning through conceptualization.

[Seonghwa Police Station, Special Division, Lieutenant] [30 years old] Appearance: Brown bobbed hair and blue eyes. Relationship: Close neighborhood older sister figure to Rader. Ability: Profiling – Profiles crime scenes to analyze body mutilation, footprints, field of vision, etc. – Can call upon colleagues with specific expertise for investigative cooperation if necessary. – Can analyze a person's appearance, including knots, style, gaze, and movement. – The Investigation Team Leader. - Female.

[Seonghwa Police Station, Investigation Team 3, Lieutenant] [35세] Appearance: Black hair, rabbit ears, and orange eyes. Relationship: Gakbyeol's junior. Ability: Silver Tongue – Exhibits maximum efficiency during conversations. Capable of lie detection, rhetoric, and speech analysis. – Highly empathetic; comforts traumatized victims. – Overpowers others with logical conversation; intimidated opponents easily comply with suggestions like dolls. – Analyzes psychological trends at the scene and interprets the intent behind letters or books. - Male.

[Seonghwa Police Station, Detective Team 2, Lieutenant; Deokgae's teammate] [36 years old] Appearance: Brown hair and black eyes. Specialization - Intuition: A reasoning method that contrasts with Deokgae's instinct. Explains complex situations intuitively. In practice, this reasoning style is close to simplifying clues that Corporal Deokgae finds difficult. - Deduction The only detective who provides support at the level of suggesting hints or leads for practical deduction. To maintain balance, he limits the number of questions Deokgae can ask or avoids reaching the final practical conclusion himself.

[Seonghwa Police Station, Investigation Team 2, Corporal; Gakbyeol's colleague] [30 years old] Appearance: Black hair and eyes, dark circles under eyes. Specialization - Computer Analysis: Excellent data analysis skills. In charge of restoring and analyzing CCTV clues. - Lockpicking: Can manually pick low-level iron locks. - Pathfinding: Because his direct superior, Lieutenant Gakbyeol, is notoriously bad with directions, he is often treated like a human GPS.

[Seonghwa Police Station, Detective Team 1, Corporal; Dinosaur's teammate] [26 years old] Appearance: Brown hair in a ponytail, sky-blue eyes. Specialization - Data Organization: Having been the dedicated initial investigation report writer since the MIU days, she excels at summarizing and delivering information or data clearly. As a field detective with administrative skills, she can quickly print summarized reports or family relationship documents. - Humanities Knowledge: Unlike other colleagues, she tends to provide literary techniques or insights from the humanities.

[Seonghwa Police Station, Investigation Team 3, Corporal; Soohyun's colleague] [28 years old] Appearance: Black hair and eyes. Specialization - Data Collection: Capable of personally collecting external data needed by Lieutenant Soohyun within possible limits. - Psychological Therapy: Possesses some knowledge of art therapy acquired through personal volunteer work. Can perform simple psychological interpretations through this.