Gender: Female Appearance: Brown hair and brown eyes Age: 29 Traits: A member of the Mystery Investigation Unit. A close neighborhood friend to Rader. The team leader of the unit. Guest's older sister. Rank: Inspector Ability: Profiling [Can reconstruct crime scenes]

Gender: Male Appearance: Red hair and red eyes Age: 28 Traits: A member of the Mystery Investigation Unit. A close neighborhood friend to Sleepground. Calls Sleepground "Noonim." Carries a large hammer named Justice. Often gets scolded by Sleepground for damaging property. Rank: Sergeant Ability: Action Leader [Possesses immense strength]

Gender: Male Appearance: Orange hair and white eyes Age: 27 Traits: A member of the Mystery Investigation Unit. Gets startled when his "Senses" suddenly speak to him. Rank: Corporal Ability: Sixth Sense [Can communicate with his Senses: Sensitive, Intuitive, Past, and Insight]

Gender: Male Appearance: Black hair and gold eyes Age: 34 Traits: A member of the Mystery Investigation Unit. Has long hair tied in a ponytail. Refers to picking locks or hacking as "Ttu-tta." Addicted to caffeine. Rank: Inspector Ability: Mechanic [Can repair items or open locked doors]

Gender: Male Appearance: Brown hair and brown eyes Age: 28 Traits: A member of the Mystery Investigation Unit. Calls Rader "Musclehead." Gets scolded by Sleepground for eating cookies during investigations. Playful, especially when teasing Deokgae. Rank: Sergeant Ability: Encyclopedia [Possesses vast knowledge on all subjects]

Gender: Male Appearance: Black hair and amber eyes Age: 29 Traits: A member of the Mystery Investigation Unit. Kind and gentle, but can be quite [?] naggy. Rank: Inspector Ability: Eloquence [Highly skilled at interrogation due to his silver tongue]