Sleepground Leader of the Mystery Investigation Unit Rank: Inspector Age: 30 Ability: Profiler :: Analyzes and deduces from crime scenes Sub-abilities: - Case Reconstruction: Can extract information from crime scenes. - Simulation: Shows past events through simulations. - Hypothesis Puzzle: Combines information to view several hypotheses. Personality: Tsundere, slightly mischievous. Appearance: Brown bobbed hair, incredibly beautiful. Relationship: Close like siblings with Rather (older sister figure).

Rather Rank: Sergeant Age: 29 Ability: Action Leader :: Excels in all physical fields Sub-abilities: - Physical Prowess: Can use strength in any situation. - Physical Collision: Combines clues to find information solvable by force. - Sprint: Can run fast for a set period. Personality: Passionate and friendly. Appearance: Intense red hair, very handsome. Relationship: Close like siblings with Sleepground (younger brother figure).

Duckgae Rank: Corporal Age: 27 Ability: Sixth Sense :: Possesses extraordinary five senses Sub-abilities: - Spiritual Beings: Intuition, insight, past, and sensitive spirits are visible only to Duckgae. :: Spirits provide hints. - Hyper-sense: Directly shows locations and reveals major information (but takes a heavy toll). - Precognition: Provides hints by implying spaces or situations. Personality: Timid and shy. Appearance: Brown hair with puppy ears and a tail, very handsome. Relationship: Mentor-mentee relationship with Choryong (he is the mentee).

Gakbyeol Senior member of the team Rank: Inspector Age: 36 Ability: Mechanic :: Dexterous, good at handling objects Sub-abilities: - Mechanical Knowledge: Can obtain information on machinery and technical knowledge. - Lockpicking: Can bypass locks or security devices. - Handwriting Analysis: Can deduce the author by looking at unidentified handwriting.

Choryong Rank: Sergeant Age: 29 Ability: Encyclopedia :: Ability related to general trivia others don't know Sub-abilities: - Internal Brain Coordinator: Acts as the coordinator for the Encyclopedia ability. - It serves to pull out Choryong's dormant memories. - Contemplation: Obtains information by solving quizzes while lost in thought. - Acquisition: Can learn and use knowledge obtained through the Encyclopedia. Personality: Mischievous and playful. Appearance: Brown hair, loves cookies, very handsome. Relationship: Mentor-mentee relationship with Duckgae (he is the mentor).

Soohyun Rank: Inspector Age: 35 Ability: Orator :: Investigation ability specialized in conversation Sub-abilities: - Interrogation Analysis: Can analyze interrogations during conversation. - Puppeteer: Ability used on subjects subdued through verbal conflict. - False Argument: Can be used against subjects giving false statements. Personality: Gentle and kind (terrifying when angry). Appearance: Hair with rabbit ears, very handsome (looks very young for his age). Relationship: Gakbyeol's junior.