Sleepground Inspector (7th year) MIU Team Leader 30 years old Female Ability: Profiler • Case Reconstruction • Investigation Cooperation • Proxy Investigation • Simulation • Hypothesis Puzzle Relationship: Close like siblings with Raddish Special Division Profiler "I am Inspector Sleepground, in charge of directing this investigation headquarters. I will lead the team and uncover the truth behind the case."

Gakbyul Inspector (3rd year), 12 years total 36 years old Male Ability: Mechanic • Machinist • Mechanical Knowledge • Computer Operation • Lockpicking (Ttoutta) • Marksmanship • Autopsy Relationship: Soohyun's senior Investigation Team 2 Leader Assistant: Officer Kim Jun-yeop "I'm Gakbyul, leader of the investigation team. Just treat me like a field technician and let's finish this quickly."

Soohyun Inspector (3rd year), 10 years total 35 years old Male Ability: Eloquent Speaker • Interrogation Analysis • False Argument • Puppeteer • Psychological Analysis • Field of Conversation • Weakness Identification Relationship: Gakbyul's junior Investigation Team 3 Leader Assistant: Officer Shin Seung-ah "I am Inspector Soohyun, leader of the investigation team. I will fulfill my duties as the interrogator of Seonghwa Police Station."

Raddish Sergeant (3rd year), 8 years total 29 years old Male Ability: Action Leader • Physical Prowess • Physical Conflict • Intimidation • Sprinting • Body Assessment • Reflexes Violent Crimes Team 2 Assistant: Inspector Kwon Min-gu "I'm Sergeant Raddish, active in Violent Crimes Team 2. I'll do my best to support the Investigation Team Leader's operations."

Dinosaur Sergeant (3rd year), 7 years total 29 years old Male Ability: Encyclopedia • Internal Coordinator • Intellectual Interest • Acquisition • Deep Knowledge Encyclopedia • Conceptualization • Redefinition Detective Team 1 Assistant: Officer Ddony "I'm Sergeant Dinosaur, the top brain of the detective team! Please call me the genius detective~"

Doggy Officer (5th year), 6 years total 27 years old Male Ability: Sixth Sense • Exceptional Five Senses • Extrasensory Perception • Precognition • Psychic Detective • Spiritual Entities • Sentiments Detective Team 2 Assistant: Inspector Oh Jun-hyeon "I'm Officer Doggy from Detective Team 2! How should I put this... anyway, I'll do my best in my own way."

Ddony: Detective Team 1, Officer, 26, Female "I'm Officer Ddony, in charge of information processing for the detective team..! I'll do my best as always." - Data Organization / Humanities Knowledge Kim Jun-yeop: Investigation Team 2, Officer, 30, Male "Ah... I'm Kim Jun-yeop from the investigation team. Well, I know a bit about computers." - Computer Analysis / Lockpicking - Speaks in Jeolla dialect Oh Jun-hyeon: Detective Team 2 Leader, Inspector, 36, Male "I'm Inspector Oh Jun-hyeon, here as the detective team leader. Wow~ good to see everyone's faces. Let's do a good job." - Intuition / Deduction Shin Seung-ah: Investigation Team 3, Officer, 28, Female "Greetings, I'm Shin Seung-ah from the investigation team. I'll make sure to provide my own diverse perspectives!" - Data Collection / Psychotherapy Kwon Min-gu: Violent Crimes Team 2 Leader, Inspector, 35, Male "Inspector Kwon Min-gu, Violent Crimes Team Leader. I'll do my best alongside my subordinate under General Leader Sleepground's command." - Physical Ability / Tonfa Martial Arts / Scene Reenactment / Stealth