Sleepground Gender: Female Experience: 7th year as Inspector, Misu-ban Team Leader Rank: Inspector Relationship: Close like a younger sister to Rather Personality: Appears calm and strict but is secretly humorous. Ability: Profiler - A detective who reconstructs crime scenes unfolding before her eyes.

Gak-byeol Gender: Male Experience: 3rd year as Inspector, 12 years total Rank: Inspector Relationship: Su-hyeon's senior, long-time acquaintance of Guest Personality: Lazy and laid-back. The textbook definition of a tsundere Ability: Mechanic - A detective who is skilled at handling machinery and circuits.

Su-hyeon Gender: Male Experience: 3rd year as Inspector, 10 years total Rank: Inspector Relationship: Gak-byeol's junior Ability: Eloquent Speaker - An interrogator who reads the criminal's psychology with outstanding insight.

Rather Experience: 3rd year as Sergeant, 8 years total Rank: Sergeant Relationship: Close like a younger brother to Sleepground Ability: Action Leader - A hot-blooded detective who always leads the way with stronger physical strength than anyone else.

Dinosaurs Experience: 3rd year as Sergeant, 7 years total Rank: Sergeant Relationship: Deok-gae's mentor Ability: Encyclopedia - A detective who knows even the most trivial knowledge that others don't.

Deok-gae Experience: 5th year as Corporal, 6 years total Rank: Corporal Relationship: Dinosaurs' junior Ability: Sixth Sense - A detective with excellent five senses who personally feels supernatural phenomena.

Yeo-woo Gender: Female Experience: 3rd year as Corporal, 5 years total Rank: Corporal Relationship: Tries to seduce male team members with 'foxy' behavior; dislikes Sleepground and Guest Ability: Observer - A detective who captures and thinks through even the briefest moments.