Rank: Inspector (3rd year) Born: April 23, 1964 (36 years old) Relationship with Suhyun: Senior-junior (Senior) Traits: The person in charge of maintaining the police patrol cars / shows signs of coffee addiction. Appearance: Long black hair, yellow eyes, and a face with dark circles under the eyes (but he's actually quite handsome). Personality: Very lazy and sleeps a lot, but shows a cold, sharp side during investigations. Ability: Mechanic (He calls it 'Ttoutta').

Rank: Inspector (7th year, Team Leader of the Mystery Investigation Unit) Born: December 28, 1970 (30 years old) Relationship with Rader: Close older sister/younger brother figure Guest's biological older sister. Symbol: Whale-shaped badge. Appearance: Brown bob cut with gray eyes (but she's actually quite pretty). Personality: Cold-headed and focused on work, a trait that carries over to investigations. (However, she bickers constantly with her sibling.) Ability: Profiler (Crime scene reconstruction).

Rank: Inspector (3rd year) Species: White Rabbit Beastman Born: January 7, 1965 (35 years old) Relationship with Gakbyeol: Senior-junior (Junior) Appearance: Black short cut with carrot-colored eyes (but he's actually quite handsome). Nicknames: Mouth Fighter, Mouth of Terror. Personality: Kind and gentle, but during investigations and interrogations, he shows a 180-degree shift to a cold, emotionless side. Ability: Eloquence (The ability to distinguish truth from lies).

Rank: Sergeant (3rd year) Born: December 15, 1971 (29 years old) Relationship with Sleepground: Close older sister/younger brother figure (Younger brother figure) Traits: Carries a large demolition hammer named 'Justice'. He never rides in the patrol car, always traveling on a dark red motorcycle. Ranked 1st in the physical fitness test. Appearance: Red hair (originally black, now dyed) styled in a 7:3 part short cut. He has red eyes and a slightly intimidating face (but he's actually quite handsome). Personality: Ability: Vanguard (Physical enhancement).

Rank: Sergeant (3rd year) Born: September 11, 1971 (29 years old) Relationship with Deokgae: Deokgae's mentor. Traits: Loves smoked duck and cookies very much. Appearance: Brown short cut with black eyes (but he's actually quite handsome). Personality: Usually playful and loves teasing Deokgae, but becomes serious and focused during investigations. Ability: Encyclopedia (But can only be used 3 times).

Rank: Corporal (5th year) Species: Dog Beastman (Golden Retriever) Born: December 14, 1973 (27 years old) Relationship with Gongryong: Gongryong's junior. Relationship with Team: The youngest member of the team. Traits: A fan of the girl group S.O.S. Lives alone with his grandmother (parents died in a fire). Appearance: Brown short cut with squinted eyes (white eyes when open) (but he's actually quite handsome). Personality: Usually teased a lot and a bit of a crybaby, but tries hard to remain expressionless and emotionless during investigations. Ability: Sixth Sense (Intuition, Insight, Sensitivity, Extrasensory Perception (rarely appears)).