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

Title: Sergeant Rather Age: 24 Gender: Male Birthday: December 15 Occupation: Police Officer Rank: Sergeant (3rd year) Affiliation: Mystery Investigation Team MBTI: ESFP (Extraverted, Sensing, Feeling, Perceiving) Symbolic Elements: Shark, Sledgehammer, Handcuffs, Motorcycle Red hair (dyed), red eyes, fierce impression. Reddish-brown tee, 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 'Nunnim'). Background: Won a Citizen's Award for catching a purse snatcher through sheer persistence and patience. Star of Investigation: Action Leader Ability: Physical Prowess and Mental Strength – Physical Ability – Intimidation – Sprint – Patience – Reflexes – Close-quarters Martial Arts – Provocation – Tension (Animal-like intuition)

Title: Lieutenant Heikak Age: 31 Gender: Male Birthday: April 23 Occupation: Police Officer Rank: Lieutenant (4th year) Affiliation: Mystery Investigation Team (Oldest and most experienced) 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 Mystery Investigation Team. White shirt, black tie with a yellow star ornament, black pants. Finds everything bothersome and always talks about resigning. However, he is serious when it counts and is a tsundere toward his teammates. Drinks a lot of coffee. Relationship with Soohyun: A cherished junior, former colleagues in the same investigation unit. Background: Former student at a technical high school. Star of Investigation: Mechanic Ability: Dexterity and Tool Handling – Hangover Cure (Lockpicking/Using a lockpick) – Machinist (Repairs broken machinery) – 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 Soohyun Age: 30 Gender: Male Birthday: January 7 Occupation: Police Officer Rank: Lieutenant (3rd year) Affiliation: Mystery Investigation Team (Interrogator) MBTI: ENFP (Extraverted, 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 overalls with black straps. Kind, gentle, and considerate. Becomes serious during interrogations depending on the subject. Relationship with Heikak: Close junior, former colleagues in the same investigation unit. Background: Served as a detective specializing in interrogations. Star of Investigation: Orator Ability: Conversation – Interrogation Analysis (Determines psychology and truthfulness through facial expressions, statements, and gestures) – Eavesdropping – Empathic Fingerprint (Induces reactions by empathizing with the subject) – False Argument (Identifies lies to break down the subject's logic) – Puppeteer (Manipulates the subject's actions by exploiting their psychology) – Psychological Analysis – Acting (Assumes false identities depending on the target) – Marksmanship – Weakness Identification

Title: Sergeant Gongryong Age: 24 Gender: Male Birthday: September 11 Occupation: Police Officer Rank: Sergeant (2nd year) Affiliation: Mystery Investigation Team MBTI: ESTP (Extraverted, Sensing, Thinking, Perceiving) Symbolic Elements: Dinosaur, Encyclopedia, Cookie Curly brown hair, grey eyes. Dinosaur hoodie, light brown coat, green pants. Sly, active, and very playful. Loves eating (especially cookies). Relationship with Deokgae: Gongryong is Deokgae's mentor. Background: Possessed an extraordinary brain since birth. Star of Investigation: Encyclopedia Ability: Miscellaneous Knowledge (Eidetic Memory) – Encyclopedia – Intellectual Interest (Catches minor clues) – Eidetic Memory – Acquisition – Deep Knowledge Encyclopedia (Notes down information) – Conceptualization (Acquires previously unknown information) – Pointing Out Lies (Only when cooperating with Soohyun) – Redefinition – Marksmanship (Inexperienced)

Title: Sergeant Deokgae Age: 22 Gender: Male Birthday: December 14 Occupation: Police Officer Rank: Sergeant (1st year) Affiliation: Mystery Investigation Team MBTI: INFP (Introverted, Intuitive, Feeling, Perceiving) Symbolic Elements: Puppy, Eyes, Backpack Light brown hair, squinted eyes (white eyes), puppy ears, and a tail. Brown hoodie, white padded vest. Timid and easily frightened. Relationship with Gongryong: Gongryong's junior. Background: Has had hypersensitive senses for a long time. Star of Investigation: Sixth Sense Ability: Five Senses and Spiritual Power – Exceptional Five Senses – Extrasensory Perception – Foresight – Spiritual Detective (Communicating with the dead) – Souls 1. Intuition (Instant judgment and impressions) 2. Past (Speaking of things beyond the present) 3. Insight (Metaphorically explaining the truth of the case) 4. Sensitivity (Feeling others' fear) 5. Extrasensory Perception (Sixth sense, rarely appears) – Contemplation – Self-defense

Age: 24 Gender: Female Birthday: September 21 Occupation: Police Officer Rank: Patrol Officer (Entry level) Affiliation: Mystery Investigation Team (New Recruit) MBTI: ENFP (Extraverted, Intuitive, Feeling, Perceiving) Symbolic Elements: Fox Brown hair, brown eyes, average appearance. Pretends to be kind but looks down on women; obsessed with men and has a 'princess complex'. Background: Applied because there are many men. Star of Investigation: None.