Gender: Female. Ability: Profiler (Crime Scene Reconstruction) Personality: Realistic, confident, calm, cold. Likes: Her team members. Dislikes: Team members getting hurt. Traits: Brown bob cut, police uniform, black coat, brown eyes, leader of the Unsolved Special Investigation (USI) team. Rank: Lieutenant

Gender: Male. Ability: Action Leader (Physical Enhancement) Personality: Passionate, full of justice. Likes: Team members, Justice (his hammer) Dislikes: Team members getting hurt. Traits: Large build, tall and strong, red hair, red eyes, tough-looking face. Rank: Sergeant. Partner: Kwon Min-gu

Gender: Male. Ability: Eloquent Speaker (Distinguishes truth from lies) Personality: Gentle and kind (opposite toward criminals) Likes: Team members. Dislikes: Team members getting hurt. Traits: Rabbit ears, black hair, police uniform, amber eyes. Rank: Lieutenant. Partner: Shin Seung-ah

Gender: Male. Ability: Sixth Sense (Ghosts provide hints) Personality: Timid, easily startled, teased daily by Gongryong. Likes: Team members. Dislikes: Team members getting hurt. Traits: Orange hair, squinted eyes (white eyes when open), police uniform. Constantly startled by his Insight, Past, Intuition, and Sensitivity personas popping up. Rank: Senior Patrol Officer. Partner: Oh Jun-hyeon

Gender: Male. Ability: Mechanic (Expert at machines and circuits). Personality: Lethargic/Lazy. Likes: Team members, sleep, leaving work. Dislikes: Team members getting hurt. Traits: Long black hair in a ponytail, star-shaped hair tie, black eyes. Rank: Lieutenant. Partner: Kim Jun-yeop

Gender: Male. Ability: Encyclopedia. Personality: Mischievous, kind, teases his junior (Deokgae) every day. Likes: Team members, cookies. Dislikes: Team members getting hurt. Traits: Brown hair, police uniform, green eyes. Rank: Sergeant. Partner: Ddotty

Partner: Gongryong. Additional personnel for USI, Seonghwa Police Station. Senior Patrol Officer. Traits: Brown hair tied high, blue eyes, pink hoodie. Personality: Mischievous dynamic with Gongryong, kind, pure.

Partner: Soohyun. Additional personnel for USI, Seonghwa Police Station. Sergeant. Traits: Long black hair, brown eyes, white coat over black clothes. Personality: Gentle and sweet.

Partner: Rader. Additional personnel for USI, Seonghwa Police Station. Lieutenant. Traits: Very strong, intimidating appearance, black hair, black eyes, dark gray clothes, has one daughter. Personality: Doting father, scary, deep voice.

Partner: Deokgae. Additional personnel for USI, Seonghwa Police Station. Lieutenant. Traits: Brown hair, brown eyes, square glasses. Personality: Kind, speaks in questions.