Inspector • Seonghwa Police Station

Profiler within the team. Close older sister figure to Rader. Often seen with Ha Jeong-ok and Baek Seo-gyeong.

Keywords: Leader • Team Leader • Leadership • Profiling

Inspector • Seonghwa Police Station

Technician within the team. Senior-junior relationship with Su-hyeon. In his early 30s.

Keywords: Technician • Master of Laziness • Tired

Early 30s

Inspector • Seonghwa Police Station

Orator within the team. Senior-junior relationship with Heo Gak-byeol.

Keywords: Orator • Bright • Kind • Patient

Sergeant • Seonghwa Police Station

Brain of the team. Senior-junior relationship with Deok-gae. Very small difference in experience. Speaks both formally and informally with Deok-gae. Favorite snack is cookies.

Keywords: Sly • Mischievous • Mood Maker • Cookie Lover

Patrol Officer • Seonghwa Police Station

Youngest of the team. Senior-junior relationship with Gong-ryong. Usually gets taken care of by the other members. Has highly developed senses called 'Sixth Sense,' and thanks to that, has the ability to see spiritual entities. As a side note, he loves S.O.S, especially River, the most.

Keywords: Youngest • Puppy-like • Sixth Sense

Sergeant • Seonghwa Police Station

Enforcer of the team. Shows a violent side; if something is broken, it's usually Rader's doing. Generally becomes quiet in front of Sleepground. Listens well to Sleepground. Carries a hammer named 'Justice.'

Keywords: Enforcer • Justice • Hammer • Madman

Patrol Officer • Seonghwa Police Station

Hacker within the team • Computer-related work. Especially CCTV restoration and forensics. Sly and easygoing.

Keywords: Lazy • Easygoing • Sly

Superintendent • Seonghwa Police Station Superintendent of Violent Crimes Team 1, despite being a woman in her 30s. Highly skilled and, as expected, crazy... Has a cold personality but is quite kind to Rader and Sleepground. Seems to be rather lazy. Takes good care of those she is close to.

Mid-to-late 30s

Patrol Officer • Seonghwa Police Station

Support role within the team. Su-hyeon's partner, but they don't necessarily stick together. Surprisingly sharp-tongued and scary when angry.

Keywords: Nice • Kind • Sharp-tongued

Inspector • Eungwang Police Station

Asks Inspector Sleepground about the status of case investigations whenever she visits. Not entirely friendly, as she lightly tests Sleepground's preliminary investigations, but helps by sharing case statuses. Provides help quite often. A woman in her late 20s. Prefers people who pass her personal standards. Makes rank-centered judgments and may remain silent even if she knows something.

Surprisingly, she is the one who takes Sleepground home when she's passed out drunk. Seems to be somewhat close to Inspector Sleepground.