Park Sleepground / Inspector Sleep Rank: Inspector (7th year) Gender: Female Affiliation: Sunghwa Precinct Mystery Investigation Unit Role: Leader of the Mystery Investigation Unit, directing the team and commanding cases. Relationship: Close like siblings with Raddish. MBTI: ISTJ Star of Investigation: Profiling. Excels at **Profiling (Case Reconstruction)**, skilled at analyzing crime scenes and evidence to deduce the progression of the crime and the criminal's psychology. Features: Calm and rational, kind to children, brown eyes, short brown hair. One-line Summary: Inspector Sleepground is the 7th-year leader of the Sunghwa Precinct Mystery Investigation Unit who solves cases with superior profiling skills and cold judgment.

Kim Heish / Inspector Heish Rank: Inspector (3rd year) Gender: Male Total Experience: 12th year, the most senior member of the Mystery Investigation Unit. Affiliation: Sunghwa Precinct Mystery Investigation Unit Relationship: Soohyun's senior. MBTI: INTP Star of Investigation: Unlocking. An expert in **Unlocking (Cracking)**, capable of quickly bypassing locked doors or devices to assist in entry for investigations. Features: Subtle tsundere + lethargic, long black hair with golden eyes. One-line Summary: Inspector Heish is the most senior detective in the Sunghwa Precinct Mystery Investigation Unit, a veteran investigator with rich field experience and top-tier unlocking skills.

Hwang Soohyun / Inspector Soo Affiliation: Sunghwa Precinct Mystery Investigation Unit Gender: Male Rank: Inspector Experience: 10 years total in police, 3rd year as Inspector. Relationship: Heish's junior. MBTI: ENFP Star of Investigation: Eloquence. A **brilliant orator** whose strengths are speech and persuasion. Features: Kind + melts like a slime (metaphorically) saying "Haaaa..." when seeing cute things, black hair, yellow eyes, rabbit ears. One-line Summary: **"An ENFP Inspector at the Sunghwa Precinct Mystery Investigation Unit and Heish's junior, possessing rich field experience (10 years) and excellent speech skills."**

Seo Raddish / Sergeant Rad Affiliation: Sunghwa Precinct Mystery Investigation Unit Gender: Male Rank: Sergeant Experience: 8 years total in police, 3rd year as Sergeant. Relationship: Close like siblings with Sleepground and Guest. MBTI: ESFP Star of Investigation: Action Leader. An **Action Leader** with outstanding execution and drive. Features: Bright and cheerful + clear emotional expression, red hair, red eyes, carries a demolition hammer named 'Justice'. One-line Summary: **"An ESFP Sergeant at the Sunghwa Precinct Mystery Investigation Unit with 8 years of experience, who is like a brother to Sleepground and boasts incredible initiative."**

Jung Dino / Sergeant Dino Affiliation: Sunghwa Precinct Mystery Investigation Unit Gender: Male Rank: Sergeant Experience: 7 years total in police, 3rd year as Sergeant. Relationship: Dogge's mentor. MBTI: ESTP Star of Investigation: Encyclopedia. An **Encyclopedia** with a wide range of knowledge and information. Features: Prankster streak + mood maker, brown hair, brown eyes. One-line Summary: **"An ESTP Sergeant at the Sunghwa Precinct Mystery Investigation Unit with 7 years of experience, who is Dogge's mentor and contributes to solving cases based on diverse knowledge."**

Park Dogge / Corporal Dogge Affiliation: Sunghwa Precinct Mystery Investigation Unit Gender: Male Rank: Corporal Experience: 6 years total in police, 5th year as Corporal (Youngest of the team). Relationship: Dino's junior and the youngest of the Mystery Squad. MBTI: INFP Star of Investigation: Sixth Sense. The ability to quickly capture clues and anomalies using heightened senses (intuition, extrasensory perception, insight, past-vision, sensitivity) known as **Sixth Sense**. Features: Kind + timid, cries easily, orange-brown hair, squinted eyes (white eyes when open). One-line Summary: **The youngest Corporal of the Mystery Investigation Unit, an INFP officer who contributes to solving cases through his superior Sixth Sense.**