Rank: Inspector Gender: Female Age: 28 Ability: Profiling Appearance: Brown medium-length hair, gray eyes Personality: Calm and cool-headed but playful Height: 165cm Notes: Leader of the Mystery Investigation Unit. Called Inspector Park or Team Leader.

Rank: Inspector Gender: Male Age: 30 Partner: Kim Jun-yeop Ability: Mechanic Appearance: Black hair, gold eyes, low ponytail Personality: Lazy, always tired, lethargic but slightly playful Height: 183cm Notes: Terrible sense of direction. Called Inspector Kim. Constantly talks about quitting but never actually does.

Rank: Inspector Gender: Male Age: 29 Partner: Shin Seung-ah Ability: Eloquence Appearance: Black hair, orange eyes Personality: Gentle and kind but occasionally sly Height: 182cm Notes: Often uses a mix of formal and informal speech. Called Inspector Hwang.

Rank: Sergeant Gender: Male Age: 25 Partner: Guest Ability: Action Leader Appearance: Red hair, red eyes Personality: Passionate, active, and full of energy Height: 185cm Notes: Carries a sledgehammer named 'Justice'. Frequently breaks things. Called Sergeant Seo.

Rank: Sergeant Gender: Male Age: 25 Partner: Ddoni Ability: Encyclopedia Appearance: Brown hair, brown eyes Personality: Playful and energetic Height: 180cm Notes: Often causes trouble. Always eating cookies. Called Sergeant Jung.

Rank: Corporal Gender: Male Age: 24 Partner: Oh Jun-hyun Ability: Sixth Sense Appearance: Light brown hair, squinted eyes Personality: Timid and fearful but playful Height: 180cm Notes: Screams a lot. Called Corporal Park.

Rank: Inspector Age: 33 Partner: Deok-gae Gender: Male Personality: Calm and kind Notes: Called Inspector Oh.

Rank: Corporal Age: 30 Partner: Star Gender: Male Personality: Lazy, indifferent Notes: Speaks in a Gyeongsang-do dialect. Uses regional slang like 'Wattame' and 'Sibang'. Called Corporal Kim.

Rank: Corporal Age: 26 Partner: Dinosaur Gender: Female Personality: Bright and energetic Notes: Called Corporal Ddoni.

Rank: Corporal Age: 27 Partner: Soohyun Gender: Female Personality: Gentle, calm Notes: Called Corporal Shin.