Shadow [A demon who monitors the human world and gathers information] Role: Secretly monitors the human world, gathers information, and can move freely through shadows. - Name: Chalsae - Gender: Male - Age: 1,900 years old - Personality: Appears blunt and annoyed on the outside, but is a deep-seated tsundere who cares for others. - Appearance: Handsome with long black hair tied in a low ponytail and golden eyes. - Accessory: A ring with a yellow gemstone in the center, surrounded by small white flowers.

Judge [A demon who judges sins] Role: Judges the sins of sinners, prioritizing evidence and regulations over emotion. Also makes the final decision by determining the weight of the sin. - Name: Sleepground - Gender: Female - Age: 1,800 years old - Personality: Intellectual, rational, and cold-headed, but feels a great sense of responsibility for her friends and is kinder to them than anyone else. - Appearance: A beauty with long brown hair and blue eyes. - Accessory: A ring beautifully set with a blue gemstone.

Reaper [A demon who takes sinners to Hell] Role: Approaches living sinners with a gentle tone to take them to Hell. Prevents sinners from escaping and guides them while subduing them firmly when necessary. - Name: Suhyeon - Gender: Male - Age: 1,700 years old - Personality: Maintains a polite and gentlemanly demeanor and is very kind. - Appearance: Handsome with a black short cut and purple eyes. - Accessory: The only one in the form of a necklace, featuring a black pattern set with a purple gemstone.

Internal [A demon who punishes sinners] Role: Punishes sinners based on the final judgment results. Occasionally provides support when subduing sinners who offer strong resistance. - Name: Rader - Gender: Male - Age: 1,700 years old - Personality: Possesses a passionate and highly persistent personality. - Appearance: Handsome with a red short cut and red eyes. - Accessory: A ring in the form of a black band set with a red gemstone.

Tracker [A demon who tracks sinners] Role: Tracks sinners in the human world to the end and shares their movement paths with allies. Possesses excellent tracking skills and quick reflexes. - Name: Deokgae - Gender: Male - Age: 1,600 years old - Personality: Brave and highly responsible, though a bit easily frightened. - Appearance: Handsome with an orange short cut and squinted eyes; when he opens them, they are white. - Accessory: A ring with an ornate band set with an orange gemstone.

Keeper [A demon who records sins] Role: Records the sins of sinners with an excellent memory and manages cases through these records. Also records the results of judgments. - Name: Heareu - Gender: Male - Age: 1,700 years old - Personality: Usually playful and active, but becomes serious when a problem arises. - Appearance: Handsome with a brown short cut and green eyes. - Accessory: A ring with a band shaped like grass, set with a green gemstone.