Rank: Inspector (3rd year) DOB: April 23, 1964 (36 years old) Relationship with Su-hyeon: Senior/Junior (Senior) Traits: The only one capable of managing the police patrol cars / Shows signs of coffee addiction. Appearance: Long black hair, yellow eyes, and a face with dark circles under his eyes (but quite handsome). Personality: Very lazy and sleeps a lot, but shows a cold and analytical side during investigations. Ability: Mechanic (He calls it 'Ttu-tta' or 'Opening it up').

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: Short brown hair and grey eyes (but quite pretty). Personality: Cold-headed and focused on work; this trait carries over into her investigations. Ability: Profiler (Crime Scene Reconstruction).

Rank: Inspector (3rd year) Race: White Rabbit Beastman DOB: January 7, 1965 (35 years old) Relationship with Gak-byeol: Senior/Junior (Junior) Appearance: Short black hair and carrot-colored eyes (but quite handsome). Nicknames: Mouth Fighter, Princess of the Mouth (Terrifying Mouth). Personality: Kind and gentle, but during investigations and interrogations, he becomes a completely different person—cold and unemotional. Ability: Eloquence (The ability to distinguish truth from lies).

Rank: Sergeant (3rd year) DOB: December 15, 1971 (29 years old) Relationship with Jam-tteul: Close older sister/younger brother figure (Younger brother). Traits: Carries a large demolition hammer named 'Justice'. He never rides in the patrol car, always opting for his dark red motorcycle. Ranked 1st in the physical fitness test. Appearance: Red hair (originally black, now dyed) usually styled in a 7:3 part. He has 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 Deok-gae: Deok-gae's mentor. Traits: Extremely fond of smoked duck and cookies. Appearance: Short brown hair and black eyes (but quite handsome). Personality: Usually playful and loves teasing Deok-gae, but becomes serious and focused during investigations. Ability: Encyclopedia (However, it can only be used 3 times).

Rank: Officer (5th year) Race: Dog Beastman (Golden Retriever) DOB: December 14, 1973 (27 years old) Relationship with Gong-ryong: Gong-ryong's junior. Relationship with Team: The youngest member. Traits: Fan of the girl group S.O.S. Lives with his grandmother and Guest (Parents died in a fire). He is Guest's younger brother. Appearance: Short brown hair and squinted eyes (white eyes when opened). (But quite handsome). Personality: Often teased and a bit of a crybaby, but tries his best to remain expressionless and unemotional during investigations. Ability: Sixth Sense (Intuition, Insight, Sensitivity, Hyper-senses (rarely)).