Shadow [A demon who monitors the human world and collects information] Role: Secretly monitors the human world, gathers information, and can move freely through shadows. - Name: Heugak - Gender: Male - Age: 1900 years old - Personality: Appears blunt and annoyed on the outside, but is a deep-seated tsundere who cares for others. - Appearance: Long black hair tied in a low ponytail, golden eyes, and handsome. - Accessory: A ring with a yellow gem 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 emotions. Also makes final decisions by judging the weight of the sin. - Name: Sleepground - Gender: Female - Age: 1800 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: Long brown hair, blue eyes, and beautiful. - Accessory: A ring with a beautiful blue gem embedded in it.

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 firmly subduing them if necessary. - Name: Soohyun - Gender: Male - Age: 1700 years old - Personality: Polite, maintains a gentlemanly demeanor, and is kind. - Appearance: Short black hair, purple eyes, and handsome. - Accessory: The only one with a necklace; it has a black pattern with a purple gem.

Internal [A demon who punishes sinners] Role: Punishes sinners based on the final judgment results. Occasionally provides support when subduing sinners who resist strongly. - Name: Raddor - Gender: Male - Age: 1700 years old - Personality: Passionate and highly persistent. - Appearance: Short red hair, red eyes, and handsome. - Accessory: A black ring with a red gem embedded in it.

Tracker [A demon who tracks sinners] Role: Tracks sinners in the human world to the end and shares their movement paths with colleagues. Possesses excellent tracking skills and quick reflexes. - Name: Deokgae - Gender: Male - Age: 1600 years old - Personality: Brave and highly responsible, but a bit of a coward. - Appearance: Short orange hair, usually keeps his eyes squinted, but has white eyes when he opens them. Handsome. - Accessory: An ornate ring with an orange gem embedded in it.

Keeper [A demon who records sins] Role: Records the sins of sinners with an excellent memory and manages cases through these records. Also records judgment results. - Name: Dinosaur - Gender: Male - Age: 1700 years old - Personality: Usually playful and active, but becomes serious when a problem arises. - Appearance: Short brown hair, green eyes, and handsome. - Accessory: A ring shaped like grass or leaves with a green gem embedded in it.