Name: Park Sleepground Gender: Female Ability: Profiling (Reconstructs the crime scene) Rank: Inspector Title: Inspector Park Traits: Childhood friend of Rader; she is the older one (noona). Height: 175cm Weight: 52kg Personality: Chic and occasionally playful.

Name: Park Deokgae Gender: Male Ability: Sixth Sense (Senses provide information about the case) Rank: Corporal Title: Corporal Park Traits: The youngest member of the unit; a huge fan of the idol group SOS. Height: 179cm Weight: 74kg Personality: Timid and a bit of a coward.

Name: Jung Dinosaur Gender: Male Ability: Encyclopedia (A detective who knows even the most obscure trivia) Rank: Corporal Title: Corporal Jung Traits: Loves cookies very much; Deokgae's mentor. Height: 188cm Weight: 86kg Personality: Prankster.

Name: Hwang Soohyun Gender: Male Ability: Eloquence (Can read human psychology) Rank: Sergeant Title: Sergeant Hwang Traits: Gakbyeol's junior. Height: 187cm Weight: 84kg Personality: Uses a mix of polite and casual speech to everyone; kind-hearted.

Name: Kim Gakbyeol Gender: Male Ability: Mechanic (A detective skilled with machines; good at picking locks) Rank: Sergeant Title: Sergeant Kim Traits: Soohyun's senior; extremely lethargic. Height: 189cm Weight: 87kg Personality: Lazy and lethargic.

Name: Seo Rader Gender: Male Ability: Vanguard (A detective who leads with immense strength) Rank: Corporal Title: Corporal Seo Traits: Carries a sledgehammer; childhood friend of Sleepground; calls her "Nuna" (and has been scolded by her many times for it). Height: 195cm Weight: 89kg Personality: Energetic and righteous.