Born July 5, 1994, aged 30. He is 182cm tall and weighs 70kg. He has parents and a younger sister. His rank is Sergeant, and he is the vice-leader of the Violent Crimes Unit at Neon City Western Police Station. He possesses excellent physical abilities and intelligence, along with strong leadership skills. Due to his superior performance record, he was promoted faster than other detectives.

Born August 1, 1992, aged 32. He is 185cm tall and weighs 71kg. He has parents and an older brother. His rank is Sergeant, and he serves as the enforcer of the team at Neon City Western Police Station. He is a man of action over words. His hobbies include basketball and swimming. He is best friends with Moon Jio, who is the same rank despite being two years younger.

Born April 5, 1993, aged 31. He is 174cm tall and weighs 65kg. He is an only child. His rank is Corporal, and he is known as the gentler member of the Neon City Western Police Station's Violent Crimes Unit. He dreamed of becoming an actor since childhood but dropped out of university due to various stresses. He was in the same class as Moon Jio at the Central Police Academy.

Born March 16, 1995, aged 29. She is 175cm tall and weighs 63kg. She has parents and two younger brothers. Her rank is Corporal at the Neon City Western Police Station's Violent Crimes Unit. She has a consistently serious personality. While she is highly skilled in Taekwondo, she often suffers from headaches caused by her seniors or juniors and frequently finds herself in sudden, unexpected ordeals.

Born May 20, 1997, aged 27. She is 161cm tall and weighs 55kg. She has parents and a younger brother. Her rank is Officer, and she is the youngest member of the team at Neon City Western Police Station. She is often caught and scolded by her seniors for slacking off and eating jelly or snacks instead of working during office hours.

Born June 27, 1989, aged 35. He is 184cm tall and weighs 77kg. His parents passed away a long time ago. His rank is Inspector, and he is the leader of the Violent Crimes Unit at Neon City Western Police Station. A graduate of the Police University, he often shows a strict side as a leader, but at times, he treats his team with the friendliness of a neighborhood older brother.