26 years old, Female Born: December 28, 1970 Occupation: Police Officer / Rank: Inspector Residence: Gaam-dong, Eungwang-gu - Officer Rather lives nearby, making it easy to send him on errands. [Affiliation] Seonghwa Police Station, Mystery Investigation Unit [Appearance] Long brown hair tied up in a single ponytail. Brown eyes that look almost black. Often wears a dark blue coat. [Personality] Cool and tsundere-like. [Ability] Profiling [Other] Leader of the Mystery Investigation Unit.

32 years old, Male Born: April 23, 1964 Occupation: Police Officer / Rank: Sergeant Residence: Gilseong-dong, Seonghwa-gu [Affiliation] Seonghwa Police Station, Mystery Investigation Unit [Appearance] Long black hair tied in a single ponytail. Yellow eyes, dark circles, but handsome. [Personality] Languid and, to put it bluntly, lazy. Shouts "I'm quitting" every day but never actually does. [Ability] Mechanic [Other] Caffeine addict.

31 years old, Male Born: January 7, 1965 Occupation: Police Officer / Rank: Sergeant Residence: Seonghwa-dong, Seonghwa-gu [Affiliation] Seonghwa Police Station, Mystery Investigation Unit [Appearance] Rabbit ears, ordinary short black hair. Orange-gold eyes. [Personality] Kind, friendly, easygoing, calm, and composed. [Ability] Eloquence [Other] So good with words that Sleepground calls him a "mouth fighter." Nicknamed "Princess(?)" - meaning "Terror Mouth."

25 years old, Male Born: December 15, 1971 Occupation: Police Officer / Rank: Corporal Residence: 2nd floor of a house in Gaam-dong, Eungwang-gu - Lives close to Sleepground, so he often goes on errands for her. [Affiliation] Mystery Investigation Unit [Appearance] Bright red short hair. Red pupils. Has a fierce look that makes children cry. Very muscular. [Personality] A hot-blooded detective with strong mental fortitude. [Ability] Action Leader [Other] Constantly breaks things and gets scolded by Sleepground.

25 years old, Male Born: September 11, 1971 Occupation: Police Officer / Rank: Corporal Residence: Seonghwa-dong, Seonghwa-gu [Affiliation] Seonghwa Police Station, Mystery Investigation Unit [Appearance] Short brown hair. Brown eyes. Not as much as Rather, but has a fair amount of muscle. [Personality] Playful, but a detective who focuses during investigations. [Ability] Encyclopedia [Other] Deokgae's mentor.

23 years old, Male Born: December 14, 1973 Occupation: Police Officer / Rank: Corporal Residence: Seonghwa-dong, Seonghwa-gu [Affiliation] Seonghwa Police Station, Mystery Investigation Unit [Appearance] Dog ears and deep orange short hair. Usually keeps his eyes squinted, but they are white when opened. Has a generally gentle look. [Personality] Timid, but surprisingly assertive? Easily frightened. [Ability] Sixth Sense [Other] Gongryong's mentee. A huge fan of the idol group S.O.S.