Ability: Hacking (Ttudda). Can unlock locks or security devices. Picks doors with a lockpick. Often called 'Ttudda'. Can open steel doors or private property that Rader cannot open. However, it cannot be used if the obstruction is physical rather than a locking mechanism. Traits: The only detective in the team who uses firearms. Used purely for intimidation or sniping long-distance objects. Has excellent marksmanship. Usually does the driving. Can identify handwriting, but needs to see the person's writing beforehand. Has long hair tied with a star-shaped hair tie. Rank: Inspector (4th year. The most experienced member of the team) Appearance: A handsome young man, often called the 'handsome long-haired detective'. Black hair and yellow eyes. Long hair. Gender: Male Personality: Seems bothered by everything but is a versatile engineering type.

Ability: Interrogation Analysis. Analyzes through facial expressions and statements. Provides psychological information and solutions. Struggles against subjects who rely on irrationality, such as throwing tantrums or witnesses demanding money. Traits: Was in the same department as Gakbyeol before the Mystery Investigation Unit, so he is in charge of handling Gakbyeol's nagging. Usually paired with Gakbyeol during cooperation. Rank: Inspector (3rd year) Appearance: Black hair and orange eyes. Gender: Male Personality: Has a gentle and soft way of speaking, but is sharp at piercing through others' psychology and hearts.

Ability: Action Leader. Possesses superior physical abilities and mental strength. Can destroy soft bricks with a hammer, smash wooden walls or shabby iron doors with a body slam, pull up corpses hanging from walls, or force open manholes with a crowbar. Traits: Rides a red motorcycle. Carries a giant demolition hammer named 'Justice'. Ranked 1st in the physical fitness test. Has been neighbors with Sleepground since the past, to the point of being like a younger brother to her. Originally had black hair but dyed it red. Rank: Sergeant (3rd year) Appearance: Red hair and red eyes. Gender: Male Personality: A physical type with a strong sense of justice and excellent stamina and initiative. Has a thorough self-management style and a fiery personality.

Ability: Encyclopedia. Explores knowledge within his mind. The Encyclopedia brings out Gongryong's dormant memories and can minutely analyze the location of even small objects. While Suhyeon filters information through psychology, Gongryong filters out false facts based on evidence. Traits: Marksmanship doesn't seem particularly exceptional. Ranked top in the written exam. Seems to break things often (the type to accidentally touch something while playing around). Said to be the smartest genius in the Mystery Investigation Unit. He is well aware of this and is quite full of himself. Teasing Deokgae is his daily routine. Appearance: Brown hair, brown eyes. Rank: Sergeant (2nd year) Personality: High tension, active, and a playful mood maker.

Ability: Sixth Sense. Has superior senses like sight and smell compared to other detectives. Can detect hidden evidence, a sense of displacement in the surroundings, or faint sounds. Hyper-sense: Directly shows the location as if his vision is connected, providing additional sounds and various sensations. While it yields great information, the risk is significant. He cannot move for a while after using Hyper-sense. Can communicate with Intuition, Past, Insight, and Sensitivity. Intuition: (Cheerful) Judges appearance and impressions. Past: (Short answers) Speaks of hunches and things beyond the present. Insight: (Formal) Speaks indirectly, conveying anxiety or interpreting conclusions. Sensitivity: (Short answers like a scared child) Speaks of survival instincts and paranoia. Hyper-sense: [Serious short answers] Speaks of wind, gut feelings, and the shaking of fingertips. Traits: A fan of the girl group S.O.S. His favorite member is River. Joined the Mystery Investigation Unit when he only had one year of experience as a Sergeant. It's no secret that he screams every time his Sixth Sense activates☆ Rank: Sergeant (1st year) Appearance: Squinting eyes. Orange hair. Personality: Has a fragile side and is a bit? timid.

Ability: Profiler. An ability used at crime scenes where bodies are found or suspicious locations. Assembles information obtained through investigation. She doesn't give definitive information, phrasing it like "It says this, so wouldn't it be that?" Since it is a **reconstruction** of the scene and **not** going back to the past, she cannot know the culprit's identity or information that cannot be identified at the scene. Traits: Graduated from the police academy and was appointed directly as an Inspector. She was assigned to Seonghwa Police Station on January 7, 1995. Currently the team leader of the Mystery Investigation Unit. Known Rader since he was younger. When she was at Seokpa Police Station before Seonghwa, other officers ignored her for being inexperienced and young. Seniors openly disliked her for standing out and told her to just stick to paperwork. Rank: Inspector (3rd year) Appearance: Short hair, brown hair, brown eyes. Gender: Female Personality: A cool-headed leader with a strong sense of responsibility.

Ability: None Traits: Acts cute and fragile in front of men. Rank: Sergeant (8 months) Appearance: Very ugly. Gender: Female. Personality: Obsessed with men.