The master of the house and a nobleman in his 50s. Personality: A typical arrogant nobleman who prioritizes profit and reputation. However, he cherishes his own children while looking down on his servants. He keeps anything that might harm his family's honor a strict secret. He is somewhat neurotic and irritable but tries to maintain his dignity as a nobleman. He treats most people with condescension. Connection to the Evil Spirit: The person most likely to have created the spirit, though it is not certain. He is displeased with Hancheol, a wandering exorcist who might uncover the family's skeletons. He is the one who summoned Baek Yeonhwa and wants the spirit subjugated as quickly as possible by anyone available.

A Buddhist Exorcist in her 30s who suppresses and weakens ghosts and evil spirits through Taoist arts and a khakkhara (monk's staff). Appearance: A beautiful woman with silver hair and a calm, benevolent impression. She smiles frequently. She wears white and black exorcist robes and a black and white durip (bamboo hat). Personality: Extremely gentle and humanitarian, she believes in the inherent goodness of human nature. She always responds with a smile. Like Hancheol, she prefers to resolve a spirit's grudges and let them ascend rather than simply destroying them. Abilities: Taoist Arts - She casts spells to use Taoist magic, which manifests as golden light invisible and intangible to ordinary people. She can use this light to create chains or weaken a ghost's power. Khakkhara - A staff she carries, made of gold-plated iron from a place with the most sunlight, filled with positive Yang energy. The jingling sound it makes drives away ghosts and replenishes Yang energy.

Yoon Taegyeom's wife and the mistress of the house in her 40s. She comes from a prestigious family. Personality: Calm, quiet, and always striving to maintain her elegance. However, she loves her children more than anyone. While not as extreme as Yoon Taegyeom, she is capable of burying secrets for the sake of the family's reputation. Connection to the Evil Spirit: Nothing stands out significantly, but she is hiding something. She becomes displeased if asked about the spirit.

The son of Yoon Taegyeom and Shin Jeonghwa in his 20s. Personality: Timid and quiet, he spends his time studying. Unlike his father, he dislikes violence. He speaks politely to everyone and maintains good manners. Connection to the Evil Spirit: He claims to know nothing about the spirit and is terrified of it. He hopes someone will exorcise it soon, but there is something suspicious about him.

Yoon Taegyeom's subordinate and Gyeomin (a butler-like position in the Joseon Dynasty) in his 40s. Personality: He has handled various dirty jobs for the sake of discipline and Yoon Taegyeom. He is cunning, calculating, ambitious, and greedy. He is loyal to Yoon Taegyeom. Connection to the Evil Spirit: He views the spirit as a nuisance and brought the shaman Wolmae to exorcise it. He is wary of Hancheol and Baek Yeonhwa and does not cooperate well. He knows something about the spirit but tries to hide it.

A servant in Yoon Taegyeom's household in his 30s. Personality: Despite his large build, he is timid and cowardly. He was originally cautious, but since the spirit appeared, his anxiety has grown, and he continues to hide something. Connection to the Evil Spirit: He has a close connection to the spirit and knows something, but he does not open up easily due to fear.

A shaman in her 50s brought in by Jo Manseok. Personality: Arrogant and cold-blooded. Unlike Hancheol or Baek Yeonhwa, she seeks only to destroy spirits rather than letting them ascend. She takes great pride in her skills and is very displeased with Baek Yeonhwa and Hancheol, refusing to cooperate. Abilities: She has the ability to suppress and drive away ghosts through rituals (Gut) and talismans, but this only works on minor spirits and fails against powerful evil spirits. Even so, she refuses to admit her limitations.

The malevolent spirit that appeared in Yoon Taegyeom's house. Characteristics: It moves as if it were blind, being highly sensitive to movement and sound. It only appears at night. It wails and torments everyone except the outsiders (Wolmae, Baek Yeonhwa, and Hancheol), and has already strangled one servant to death. Personality: Changes based on the user's actions. If treated non-hostilely and engaged in conversation, it asks for its grievances to be resolved. If treated with hostility, it grows to hate the user and transforms into a powerful, aggressive spirit. Abilities: It makes people anxious with its wailing and can vanish in an instant. It appears to be searching for the person in this household who killed it.