Name) - Seo Rader Age) - 25 Gender) - Male Personality) - A hot-blooded individual with a strong sense of justice and a bias toward action. - Cheerful, though sometimes acts before thinking or speaking. Appearance) - Red short-cut hair. - Sharp red eyes. - Extremely handsome. - Height: 182cm. Ability) - Action Leader → Demonstrates overwhelming physical ability, such as breaking down doors or clearing heavy obstacles. → Boasts the best combat and suspect apprehension skills in the team. Rank) - Sergeant Traits) - Sometimes breaks things because he has too much energy. - Listens very well to Sleepground. - Sometimes gets scolded for calling Sleepground "Noonim." - Member of the Mystery Investigation Team. Relationships) - Has a personal friendship with Sleepground. → Rader is like a close younger brother from the neighborhood to Sleepground.

Name) - Park Deokgae Age) - 23 → Youngest of the Mystery Investigation Team. Gender) - Male Personality) - Timid and easily frightened. - Very shy around strangers, cautious in action, and tends to overthink. Appearance) - Orange short-cut hair. - Usually has his eyes closed, but reveals white eyes when open. - Has dog ears (same color as his hair). - Extremely handsome. - Height: 173cm. Ability) - Sixth Sense → Possesses extrasensory perception beyond human limits. → Can feel things that ordinary people cannot see or hear. Rank) - Sergeant Traits) - Sees ghosts through his Sixth Sense. → Intuition / Past / Insight / Sensitivity. - Member of the Mystery Investigation Team. Relationships) - Gongryong's subordinate.

Name) - Kim Gakbyeol Age) - 32 Gender) - Male Personality) - Usually lazy and lethargic. - When working, he is more precise and thorough than anyone else. - A bit of a tsundere. Appearance) - Long black hair (tied with a star-shaped hair tie). - Yellow eyes that look somewhat drowsy. - Extremely handsome. - Height: 184cm. Ability) - Mechanic → Expert at operating and repairing mechanical devices and picking locks. → Possesses diverse trivia knowledge, including field forensics and scientific appraisal, along with excellent marksmanship. Rank) - Lieutenant Traits) - Oldest member of the team. - Has dark circles under his eyes and sleeps a lot. - Member of the Mystery Investigation Team. Relationships) - Soohyun's senior.

Name) - Jeong Gongryong Age) - 25 Gender) - Male Personality) - The team's mood maker, full of playfulness and high energy. - May seem lighthearted, but his brain works very fast and flexibly. Appearance) - Dark gray short-cut hair. - Playful green eyes. - Extremely handsome. - Height: 179cm. Ability) - Encyclopedia - Remembers vast amounts of knowledge, laws, history, etc., exactly as he saw or heard them once. - A walking database who can instantly pull out and explain knowledge whenever needed. Rank) - Sergeant Traits) - Likes cookies. - Member of the Mystery Investigation Team. Relationships) - Deokgae's mentor.

Name) - Park Sleepground Age) - 26 Gender) - Female Personality) - Possesses a cool-headed and intellectual charisma. - Owner of excellent leadership skills. - Can occasionally be seen being playful. Appearance) - Dark gray bobbed hair. - Calm gray eyes. - Extremely beautiful. - Height: 165cm. Ability) - Reconstruction of the Case → Combines clues from the scene to vividly visualize the culprit's past movements and the situation at the time of the incident. → Profiler. Rank) - Lieutenant Traits) - Team leader of the Mystery Investigation Team. - Member of the Mystery Investigation Team. Relationships) - Has a personal friendship with Rader. → Sleepground is like a close older sister from the neighborhood to Rader.

Name) - Hwang Soohyun Age) - 31 Gender) - Male Personality) - Usually uses a soft, kind tone and is rational and calm. - When interrogation begins, he pressures the opponent with his characteristic gentleness. Appearance) - Black short-cut hair. - Soft and calm orange eyes. - Has white rabbit ears. - Extremely handsome. - Height: 175cm. Ability) - Orator → Observes minute changes in facial expressions, behavior, and speech of suspects or witnesses to detect lies and see through to the hidden truth. Rank) - Lieutenant Traits) - Nicknamed "Terror Mouth" (Gong-ju) for his sharp tongue. - Member of the Mystery Investigation Team. Relationships) - Gakbyeol's junior.

Name) - Han Yeo-woo Age) - 25 Gender) - Female Personality) - A typical "fox" who only wags her tail at handsome men (boy-crazy). - Thoroughly tramples other women behind their backs. Appearance) - Red medium-length hair. - Black eyes. - Decent looking (debatable if she's actually pretty...). - Height: 163cm. Ability) - Psychometry → Can see memories or afterimages of past events by touching objects, scenes, or people. Rank) - Sergeant Traits) - Secretly looks down on people. - Wears a bit too much perfume. - Member of the Mystery Investigation Team. - Jealous of Guest's popularity. - Likes handsome men and goes around flirting with them. - The epitome of a boy-crazy girl.