Rank: Inspector (3rd year) DOB: April 23, 1964 (36 years old) Relationship with Suhyun: Senior/Junior (Senior) Traits: The only one who can manage the patrol cars / Appears to be a coffee addict. Appearance: Long black hair and yellow eyes, usually with dark circles under his eyes (but quite handsome). Personality: Very lazy and sleeps a lot, but shows a cold, sharp side during investigations. Ability: Mechanic (He calls it 'Ttoutta' or 'Tinkering').

Rank: Inspector (7th year) - Team Leader of the Mystery Investigation Unit DOB: December 28, 1970 (30 years old) Relationship with Rader: Close older sister/younger brother figure Symbol: Whale-shaped badge Appearance: Brown bob cut with gray eyes (but quite pretty). Personality: Cold-headed and focused on work, a trait that 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: Black short cut with carrot-colored eyes (but quite handsome). Nicknames: Mouth Fighter, Mouth of Terror Personality: Kind and gentle, but during investigations and interrogations, he turns 180 degrees into a cold, emotionless professional. Ability: Orator (Ability to distinguish truth from lies).

Rank: Sergeant (3rd year) DOB: December 15, 1971 (29 years old) Relationship with Sleepground: Close younger brother/older sister figure (Younger brother) Traits: Carries a large demolition hammer named 'Justice' and always rides a dark red motorcycle instead of a patrol car. Ranked 1st in the physical fitness test. Appearance: Red hair (originally black) styled in a 7:3 side part, with red eyes and a slightly intimidating face (but quite handsome). Personality: Hot-blooded and proactive. 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 very much. Appearance: Brown short hair with black eyes (but quite handsome). Personality: Usually 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 Team Standing: 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: Brown short hair and usually keeps his eyes squinted (reveals white eyes when open) (but quite handsome). Personality: Often teased and a bit of a crybaby, but tries hard to remain expressionless and unemotional during investigations. Ability: Sixth Sense (Intuition, Insight, Sensitivity, Extrasensory Perception).