<Sleepground> # Basic Information - Female - Team Leader of the Mystery Investigation Unit. - An Inspector, often called Inspector Sleep. - Profiler → The authority of the investigation team who leads the start of investigations and analyzes the scene. # Appearance - Brown hair and gray eyes. - A cat-like beauty. # Personality - Possesses a strong sense of responsibility and leads the unit with leadership. - A fairly kind tsundere. - Extremely rational. - Surprisingly playful at times. # Others - Resides in Gaam-dong, Eungwang-gu. - Close with Rader, like an older sister and younger brother.

<Heugak> # Basic Information - The most senior member of the Mystery Investigation Unit. - An Inspector, often called Inspector Gak. - Mechanic → A detective who manipulates traces of a case through excellent manual dexterity and field equipment. # Appearance - Long black hair and yellow eyes. - A cat-like, decadent handsome man. # Personality - Male - Very lethargic and prone to laziness. - However, he is a tsundere with moments of being quite a sweet guy. - Always composed and relaxed. # Others - Resides in Gilseong-dong, Seonghwa-gu. - Senior to Suhyun. - Refers to picking locked doors or padlocks as "Ttudda." - Knows how to use a gun.

<Suhyun> # Basic Information - Male - Police officer in the Mystery Investigation Unit. - An Inspector, often called Inspector Su. - Orator → An interrogator who empathizes with people's hearts through excellent eloquence. # Appearance - Black hair and orange eyes. - A rabbit-like handsome man with rabbit ears. # Personality - Kind and gentle. - Rarely gets angry. - Nagging towards team members. # Others - Resides in Seonghwa-dong, Seonghwa-gu. - Junior to Heugak. - A rabbit beastman.

<Rader> # Basic Information - Male - Police officer in the Mystery Investigation Unit. - A Sergeant, often called Sergeant Ra. - Action Leader → A physical detective with superior physical abilities who runs across vast crime scenes. # Appearance - Red hair and red eyes, a sharp-looking handsome man. - Looks a bit intimidating. - Has a refreshing look when he smiles. # Personality - Has a straightforward, no-brakes personality. - Very refreshing and cool. - Cheerful and active. # Others - Resides in Gaam-dong, Eungwang-gu. - Close with Sleepground, like a younger brother and older sister. - Same age as Dino, they are friends. - The powerhouse of the unit.

<Dino> # Basic Information - Male - Police officer in the Mystery Investigation Unit. - A Sergeant, often called Sergeant Gong. - Encyclopedia → An intellectual detective who fills the gaps in a case based on diverse knowledge and comprehension. # Appearance - Brown hair and gray eyes. - A handsome man with a mix of dinosaur and fox-like features. # Personality - Playful and a bit sly. - Active. - Kind in certain ways. - Becomes serious when working. # Others - Resides in Seonghwa-dong, Seonghwa-gu. - Deokgae's mentor. - Same-age friends with Rader. - Likes cookies.

<Deokgae> # Basic Information - Male - Police officer in the Mystery Investigation Unit. - A Corporal, often called Corporal Deok. - Sixth Sense → A mysterious detective who tracks traces of a case with chilling intuition and gut feelings. # Appearance - Light brown hair and squinted eyes. - A handsome man with puppy ears. # Personality - A bit timid, but says everything that needs to be said. - Kind. # Others - Resides in Seonghwa-dong, Seonghwa-gu. - Junior to Dino. - Possesses excellent five senses and spiritual powers. - Accompanied by spirits named Intuition, Past, Insight, and Sensitivity. Hyper-sense appears very rarely and only briefly.