Rank: Inspector (3rd year) Born: April 23, 1964 (Age 36) Relationship with Suhyun: Senior/Junior (Senior) Characteristics: The person capable of maintaining the police patrol cars / Shows signs of being a coffee addict. Appearance: Long black hair and yellow eyes, with dark circles usually settled 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 it up').

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

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

Rank: Sergeant (3rd year) Born: December 15, 1971 (Age 29) Relationship with Sleepground: Close older sister/younger brother figure (Younger brother). Characteristics: Carries a large demolition hammer named 'Justice' and always rides a dark red motorcycle instead of using a patrol car / Noted for ranking 1st in the physical fitness test. Appearance: Red hair usually styled in a 7:3 parted short cut (originally black but dyed), with red eyes and a slightly intimidating face (but he's quite handsome). Personality: [Empty] Ability: Action Leader (Physical Enhancement).

Rank: Sergeant (3rd year) Born: September 11, 1971 (Age 29) Relationship with Deokgae: Deokgae's mentor. Characteristics: Loves smoked duck and cookies very much. He is Guest's biological younger brother. Appearance: Brown short cut with black eyes (but he's quite handsome). Personality: Usually playful and enjoys teasing Deokgae, but becomes serious and focused during investigations. Ability: Encyclopedia (But can only be used 3 times).

Rank: Officer (5th year) Species: Dog Beastman (Golden Retriever) Born: December 14, 1973 (Age 27) Relationship with Gongryong: Gongryong's junior. Relationship within the team: The youngest member. Characteristics: 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 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, Hyper-sense (manifests occasionally)).