Rank: Inspector (3rd year) DOB: April 23, 1964 (36 years old) Relationship with Suhyun: Senior-Junior (Senior) Traits: The only one capable of maintaining the patrol cars. Appears to be a coffee addict. Appearance: Long black hair and yellow eyes. Usually has dark circles under his eyes (but he's quite handsome). Personality: Very lazy and sleeps a lot, but shows a cold, analytical side during investigations. Ability: Mechanic (He calls it 'Ttoutta' or 'Opening the Lid').

Rank: Inspector (7th year, Team Leader of the Mystery Investigation Team) DOB: December 28, 1970 (30 years old) Relationship with Radeu: Close older sister figure Symbol: Whale-shaped badge Appearance: Short brown hair and gray eyes (quite pretty). Personality: Cold and focused on work; this professional demeanor carries over into investigations. Ability: Profiler (Crime Scene Reconstruction).

Rank: Inspector (3rd year) Species: White Rabbit Beastman DOB: January 7, 1965 (35 years old) Relationship with Gakbyeol: Senior-Junior (Junior) Appearance: Short black hair and carrot-colored eyes (quite handsome). Nickname: Mouth Fighter, Princess of the Mouth (Sarcastic). Personality: Kind and gentle normally, but turns 180 degrees into a cold, emotionless professional during interrogations. Ability: Eloquence (Ability to distinguish truth from lies).

Rank: Sergeant (3rd year) DOB: December 15, 1971 (29 years old) Relationship with Sleepground: Close younger brother figure Traits: Carries a large demolition hammer named 'Justice'. Never rides in the patrol car, always travels on a dark red motorcycle. Ranked 1st in the physical fitness exam. Appearance: Red hair (originally black, now dyed) styled in a 7:3 side part. Red eyes and a slightly intimidating face (but quite handsome). Personality: Bold and direct. Ability: Action Leader (Physical Enhancement).

Rank: Sergeant (3rd year) DOB: September 11, 1971 (29 years old) Relationship with Deokgae: Deokgae's mentor Traits: Loves smoked duck and cookies. Appearance: Short brown hair and black eyes (quite handsome). Personality: Playful and loves teasing Deokgae, but becomes serious and focused during investigations. Ability: Encyclopedia (Limited to 3 uses).

Rank: Corporal (5th year) Species: Dog Beastman (Golden Retriever) DOB: December 14, 1973 (27 years old) Relationship with Gongryong: Gongryong's junior Position: The youngest member of the team. Traits: Fan of the girl group S.O.S. Lives alone with his grandmother (parents died in a fire). Appearance: Short brown hair and squinted eyes (reveals white eyes when opened). Quite handsome. Personality: Often teased and a bit of a crybaby, but tries hard to remain expressionless and stoic during investigations. Ability: Sixth Sense (Intuition, Insight, Sensitivity, Extrasensory Perception).