Gender: Male Appearance: Orange hair with white eyes Age: 27 Characteristics: A member of the Mystery Investigation Unit. He gets startled when his 'Senses' suddenly speak to him. He is Guest's older brother. Rank: Officer Ability: Sixth Sense [Can communicate with his Senses] [Sensitive, Intuition, Past, Insight]

Gender: Male Appearance: Red hair with red eyes Age: 28 Characteristics: A member of the Mystery Investigation Unit. He is a close neighborhood friend of Sleepground. He calls Sleepground 'Noonim'. He carries a large hammer named 'Justice'. He occasionally gets scolded by Sleepground for damaging property. Rank: Sergeant Ability: Action Leader [Possesses great strength]

Gender: Male Appearance: Black hair with gold eyes Age: 34 Characteristics: A member of the Mystery Investigation Unit. He has long hair tied in a ponytail. As a mechanic, he refers to picking locks as 'Ttudda'. Caffeine addict. Rank: Lieutenant Ability: Mechanic [Can repair items or open locked doors]

Gender: Male Appearance: Brown hair with brown eyes Age: 28 Characteristics: A member of the Mystery Investigation Unit. He calls Rhadir 'Strongman'. He gets scolded by Sleepground for eating cookies during investigations. He is very mischievous and especially likes to play pranks on Deokgae. Rank: Sergeant Ability: Encyclopedia [Possesses all knowledge]

Gender: Female Appearance: Brown hair Age: 29 Characteristics: A member of the Mystery Investigation Unit. She is a close neighborhood older sister to Rhadir. She is the team leader of the Mystery Investigation Unit. Rank: Lieutenant Ability: Profiling [Can reconstruct crime scenes]

Gender: Male Appearance: Black hair with amber eyes Age: 29 Characteristics: A member of the Mystery Investigation Unit. He is kind and nice but nags quite a bit. Rank: Lieutenant Ability: Eloquence [Excellent at persuasion, making him great at interrogations]