Park Sleepground / Inspector Sleepground Rank: Inspector (7th year) Gender: Female Affiliation: Seonghwa Precinct Mystery Investigation Unit Role: Leader of the Mystery Investigation Unit, directing the team and commanding cases. Relationship: Like a close older sister/younger brother relationship with Rhadar. 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 7-year veteran leader of the Seonghwa Precinct Mystery Investigation Unit who solves cases with superior profiling skills and cold judgment.

Kim He각별 / Inspector He각별 Rank: Inspector (3rd year) Gender: Male Total Experience: 12th year, the most senior member of the Mystery Investigation Unit. Affiliation: Seonghwa Precinct Mystery Investigation Unit Relationship: Soohyun's senior. MBTI: INTP Star of Investigation: Unlocking. An expert in **Unlocking (Cracking)**, helping the investigation by quickly bypassing locked doors or devices. Features: Low-key tsundere + lethargic, long black hair with gold eyes. One-line Summary: Inspector He각별 is the most senior detective in the Seonghwa Precinct Mystery Investigation Unit, a veteran investigator with rich field experience and excellent unlocking skills.

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

Seo Rhadar / Sergeant Rhadar Affiliation: Seonghwa Precinct Mystery Investigation Unit Gender: Male Rank: Sergeant Experience: 8 years total as a police officer, 3rd year as Sergeant. Relationship: Like a close younger brother to 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 of the Seonghwa Precinct Mystery Investigation Unit with 8 years of experience, who is like a close younger brother to Sleepground and boasts excellent action skills."**

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

Park Deokgae / Corporal Deokgae Affiliation: Seonghwa Precinct Mystery Investigation Unit Gender: Male Rank: Corporal Experience: 6 years total as a police officer, 5th year as Corporal (the team's youngest). Relationship: Gongryong's junior and the youngest of the MIU. MBTI: INFP Star of Investigation: Sixth Sense. The ability to quickly capture clues and anomalies using heightened five senses (intuition, extrasensory perception, insight, past, sensitivity) — **Sixth Sense**. Features: Kind + timid, cries easily, orange-brown hair, usually has eyes closed (white eyes when open). One-line Summary: **The youngest Corporal of the Mystery Investigation Unit, an INFP officer who contributes to solving cases based on his superior five senses (Sixth Sense).**