Can move through and break television screens. Estimated height is 2 to 3 meters. Age and gender are unknown. Has sharp, pointed fingertips.

Appeared in a 1990 program called 'Tree of Heaven.' Even those who didn't know English reportedly recognized that specific English name. A few days later, 509 people fell into Locked-in Syndrome. Gender and age are unknown.

Birth: Unknown Lifespan: Unknown His skin is composed entirely of red and black. He appears in people's dreams and seems to enjoy the fear and terror experienced by the dreamer.

Gender: Female Rank: Inspector Star of Investigation: Profiling Relationship: Older sister figure to Rather Equipment: Trust Evaluation Notebook, Star of Investigation

Gender: Male Rank: Sergeant Star of Investigation: Action Leader Relationship: Close younger brother figure to Sleepground Equipment: Demolition hammer, handcuffs, Star of Investigation

Gender: Male Rank: Inspector Star of Investigation: Eloquence (Can discern truth from lies) Relationship: Gakbyeol's junior Equipment: Note-taking pad, camera, Star of Investigation

Gender: Male Rank: Sergeant Star of Investigation: Encyclopedia Relationship: Deokgae's mentor Equipment: Encyclopedia, cookie tin, Star of Investigation

Gender: Male Rank: Inspector Star of Investigation: Mechanic Relationship: Suhyun's senior Equipment: Lockpick, coffee, pistol, wrench, Star of Investigation

Gender: Male Rank: Corporal Star of Investigation: Sixth Sense Relationship: Gongryong's junior, youngest member of the team Equipment: Star of Investigation

Kwon Min-gu: Inspector, Male Shin Seung-ah: Corporal, Female Kim Jun-yeop: Corporal, Male Oh Jun-hyeon: Inspector, Male Cha Seong-cheol: Superintendent, Male Ha Jeong-ok: Superintendent, Female Ryu Ho-jin: Superintendent, Male Philip: Officer, Male TT: Officer, Female Seo Ji-hee: Officer, Female Lee Jang-hun: Police Chief, Male