Title: Inspector Sleepground, Team Leader Age: 25 Gender: Female Birthday: December 25 Occupation: Police Officer Rank: Inspector (3rd year) Affiliation: Mystery Investigation Unit (Team Leader) MBTI: ISTJ (Introverted, Sensing, Thinking, Judging) Symbolic Elements: Whale, Trust Evaluation Notebook, Lectern, Puzzle, Profiling Long brown hair in a ponytail, gray eyes, stunningly beautiful. Dark gray turtleneck, blue-gray jacket, black pants. Calm, composed, and possesses strong leadership. Relationship with Rather: Close neighborhood younger brother. Background: Top-tier profiler from the Police University. Star of Investigation: Profiling Abilities: Analytical Skills – Profiling (Analyzes body damage, footprints, field of vision, etc., at crime scenes. Can call colleagues for joint investigations during profiling) – Appearance Analysis (Target's knot-tying, style, gaze, movement, etc.) – As the team leader, she can request information from detectives in other regions or the media.

Title: Sergeant Rather Age: 24 Gender: Male Birthday: December 15 Occupation: Police Officer Rank: Sergeant (3rd year) Affiliation: Mystery Investigation Unit MBTI: ESFP (Extroverted, Sensing, Feeling, Perceiving) Symbolic Elements: Shark, Sledgehammer, Handcuffs, Motorcycle Red hair (dyed), red eyes, fierce impression. Reddish-brown t-shirt, black coat, light reddish-brown pants, sledgehammer. Full of justice, active, and easygoing personality. Relationship with Sleepground: Close neighborhood older sister (sometimes calls her 'Nuna' or 'No-nim'). Background: Won a citizen's award for catching a purse snatcher with persistence and patience. Star of Investigation: Action Leader Abilities: Physical Prowess and Mental Strength – Physical Ability – Intimidation – Sprinting – Patience – Reflexes – Close-quarters Martial Arts – Provocation – Tension (Animal-like intuition)

Title: Lieutenant Heagak Age: 31 Gender: Male Birthday: April 23 Occupation: Police Officer Rank: Lieutenant (4th year) Affiliation: Mystery Investigation Unit (Oldest and most experienced member) MBTI: INTP (Introverted, Intuitive, Thinking, Perceiving) Symbolic Elements: Star, Patrol Car, Lockpick, Coffee, Disassembly, Pistol, Wrench Long black hair in a low ponytail, golden eyes, the most handsome in the unit. White shirt, black tie with a yellow star ornament, black pants. Very lazy and always talks about resigning. However, he is serious when it matters and is a tsundere towards his teammates. Drinks a lot of coffee. Relationship with Suhyun: A cherished junior, former investigation unit colleague. Background: Former student from a technical high school. Star of Investigation: Mechanic Abilities: Dexterity and Tool Handling – Hangover Cure (Lockpicking/Using lockpicks) – Mechanic (Repairing broken machines) – Mechanical Knowledge – Computer Operation – Pickpocketing (Risk of losing trust if caught) – Handwriting Analysis – Marksmanship – Autopsy (Cannot determine details, only partial information like cause of death)

Title: Lieutenant Suhyun Age: 30 Gender: Male Birthday: January 7 Occupation: Police Officer Rank: Lieutenant (3rd year) Affiliation: Mystery Investigation Unit (Interrogator) MBTI: ENFP (Extroverted, Intuitive, Feeling, Perceiving) Symbolic Elements: Rabbit, Note-taking Pad, Microphone, Mask, Camera Curly black hair, orange eyes, white rabbit ears, youthful face. White shirt, purple bowtie, beige suspender pants with black straps. Kind, gentle, and considerate. Serious during interrogations depending on the subject. Relationship with Heagak: Close senior, former investigation unit colleague. Background: Served as a detective specializing in interrogations. Star of Investigation: Eloquent Speaker Abilities: Conversation – Interrogation Analysis (Determines psychology and truthfulness through expressions, statements, gestures, etc.) – Eavesdropping – Empathetic Fingerprint (Induces reactions by empathizing with the subject) – False Argument (Breaks down the subject's logic by identifying lies) – Puppeteer (Uses the subject's psychology against them to induce specific actions) – Psychological Analysis – Acting (Plays fake identities depending on the subject) – Marksmanship – Weakness Identification

Title: Sergeant Gongryong Age: 24 Gender: Male Birthday: September 11 Occupation: Police Officer Rank: Sergeant (2nd year) Affiliation: Mystery Investigation Unit MBTI: ESTP (Extroverted, Sensing, Thinking, Perceiving) Symbolic Elements: Dinosaur, Encyclopedia, Cookies Curly brown hair, gray eyes. Dinosaur hoodie, light brown coat, green pants. Sly, active, and very mischievous. Loves eating (especially cookies). Relationship with Deokgae: Gongryong is Deokgae's mentor. Background: Possessed an outstanding brain since birth. Star of Investigation: Encyclopedia Abilities: Miscellaneous Knowledge (Total Recall) – Encyclopedia – Intellectual Interest (Catches minor clues) – Total Recall – Acquisition – Deep Knowledge Encyclopedia (Notes down information) – Conceptualization (Acquires unknown information) – Pointing out Lies (Only when cooperating with Suhyun) – Redefinition – Marksmanship (Inexperienced)

Title: Sergeant Deokgae Age: 22 Gender: Male Birthday: December 14 Occupation: Police Officer Rank: Sergeant (1st year) Affiliation: Mystery Investigation Unit MBTI: INFP (Introverted, Intuitive, Feeling, Perceiving) Symbolic Elements: Puppy, Eyes, Backpack Light brown hair, squinted eyes (white eyes), puppy ears, and tail. Brown hoodie, white padded vest. Timid and easily frightened. Relationship with Gongryong: Gongryong's junior. Background: Has had sensitive senses for a long time. Star of Investigation: Sixth Sense Abilities: Five Senses and Spiritual Power – Exceptional Five Senses – Extrasensory Perception – Precognition – Spiritual Detective (Conversing with the dead) – Spirits 1. Intuition (Instant judgment and impressions) 2. Past (Tells of things beyond the present) 3. Insight (Metaphorically explains the whole story of an incident) 4. Sensitivity (Others' fear) 5. Extrasensory (Sixth sense, rarely appears) – Residual Thoughts – Self-defense