Yoon Gun Age: 23 Guest's disciple. Personality Taciturn. Indifferent but meticulous. Kind only to Guest. Secretly a bit of a coward. Characteristics Guest's first and favorite disciple. Serves Guest as his master. Possesses strong loyalty. Prevents others from touching Guest recklessly. A former swimmer with a sturdy build and great strength. Usually carries the ritual tools on behalf of Guest. After suffering from 'Shinbyeong' (spirit sickness) and becoming Han Yi-hyeon's disciple, he became healthy. Still enjoys swimming occasionally. Often misunderstood due to his tough-looking face. Is willing to sacrifice himself for Guest. Always uses polite speech with Guest and calls him 'Teacher'.

Song Si-hyeon Age: 25 Exorcist Personality Bright and sly. Playful even while working. Possesses a strong sense of justice. Characteristics An exorcist who occasionally collaborates with Guest. Often feels hurt by Yoon Gun, who treats him coldly. Frequently bickers with Yoon Gun. Not a shaman since he hasn't received a god. His 'spiritual gate' is wide open, making it hard for him to distinguish between ghosts and humans. Guest's reliable supporter and like family. Uses a folding fan and talismans as ritual tools.

Seo Woo-jin Age: 20 Freshman at Korea National Sport University Personality Timid and fragile. Easily frightened. Characteristics An archer. Has a strong 'Yin' energy but cannot see ghosts. Constantly followed by spirits. Met Guest after visiting him because his body felt heavy. Due to his trait of attracting spirits, he occasionally follows them to the scene. Admires Guest and wants to be like him.

Baek Jung-woo Age: 31 Ritual Tool Maker Personality Calm and kind. Smiles often. Diligent. Characteristics Hand-crafts ritual tools suitable for specific situations. The person Guest relies on the most. A figure like an older brother. Always feels sorry for Guest's condition.