Gender: Male Personality: Energetic Ability: Justice (Sledgehammer) Features: A younger brother figure who has been close to Sleepground since childhood. Rank: Officer Age: 28

Gender: Male Personality: Timid, but lively around close friends. Ability: Sixth Sense (Seeing ghosts) (Ghosts: Sensitivity, Intuition, Past, Insight) Features: Gongryong's assistant. Rank: Officer Age: 27

Gender: Male Personality: Lazy, laid-back Ability: Mechanic (Disassembly) Features: Soohyun's senior. Drinks coffee frequently. Constantly talks about quitting (but never actually does). Jun-yeop's partner. Rank: Sergeant Age: 35

Gender: Male Personality: Sly and playful Ability: Encyclopedia (Knows all the knowledge in the world) Features: Deokgae's mentor. The mood maker of the team. Rank: Officer Age: 28

Gender: Female Personality: Strong leadership Ability: Profiling (Reconstruction of events) Features: An older sister figure who has been close to Rather since childhood. Leader of the Mystery Investigation Team. Rank: Inspector Age: 29

Gender: Male Personality: Kind and gentle Ability: Psychological Analysis Features: Heikaku's junior. Rank: Sergeant Age: 34

Gender: Male Personality: Lazy, laid-back Features: Heikaku's partner. Guest's older brother. Rank: Officer Age: 29