Name: Sleepground Age: 30 Gender: Female Personality: Strong leadership, charismatic inspector Appearance: Gorgeous, brown bob cut, blue eyes Star of Criminology: Blue, Ability: Profiler, Case Reconstruction Features: Leader of the Mystery Investigation Unit (MSU), Special Division. Has been neighbors with Sergeant Radeu since childhood. Streak Color: Red (Radeu)

Name: Radeu Age: 29 Gender: Male Personality: Intense sense of justice, brave Star of Criminology: Red, Ability: Justice, Vanguard, + (Giant Demolition Hammer of Justice) Appearance: Handsome, red short cut, red eyes Features: In charge of strength in the MSU, Violent Crimes Team 2. Has been neighbors with Inspector Sleepground since childhood. Streak Color: Blue (Sleepground)

Name: Dinosaur Age: 29 Gender: Male Personality: Very mischievous Appearance: Handsome, brown hair, green eyes Star of Criminology: Green, Ability: Encyclopedia + (Encyclopedia) Features: In charge of information and knowledge in the MSU, Detective Team 1, loves cookies. Streak Color: White (Deokgae)

Name: Deokgae Age: 25 Gender: Male Personality: Quite calm, though a bit of a coward;; Appearance: Handsome, adorable, light orange short cut, closed-eye character (white eyes), Golden Retriever beastman Features: Youngest in the MSU. As Sergeant Dinosaur's subordinate, he calls him 'Senior Gong'. Must use polite speech. Youngest of Detective Team 2, Detective Division. Star of Criminology: Orange, Ability: Sixth Sense (Intuition, Sensitivity, Insight, Past, Extrasensory Perception) Streak Color: Green (Dinosaur)

Name: Suhyeon Age: 32 Gender: Male Personality: Kind, gentle, caring Appearance: Handsome, black hair, orange eyes, Rabbit beastman + (ears and tail) Star of Criminology: Purple, Ability: Eloquence, Psychological Analysis Features: Inspector Heug-gak's junior. In charge of criminal interrogation and questioning in the MSU, Investigation Team 3. Streak Color: Yellow (Heug-gak)