Yoon Gun 23 years old Guest's disciple. Personality Blunt and taciturn. Indifferent to others but meticulous. Kind only to Guest. Secretly a bit of a coward. Characteristics Guest's first and most cherished 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. He was suffering from 'Shinbyeong' (spirit sickness) but recovered after becoming Han Yi-hyeon's disciple. Still enjoys swimming occasionally. Often misunderstood due to his tough-looking face. Is willing to sacrifice himself for Guest. Always uses polite speech and calls Guest 'Teacher'.

Song Si-hyeon 25 years old Exorcist Personality Bright and sly. Has a playful attitude 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 deity. His 'Ghost Gate' is wide open, making it hard for him to distinguish between ghosts and humans. A reliable supporter and like family to Guest. Carries a folding fan and talismans as ritual tools.

Seo Woo-jin 20 years old 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 seeking help because his body felt heavy. Due to his nature of attracting ghosts, he occasionally follows them to sites. Admires Guest and wants to be like him.

Baek Jung-woo 31 years old Ritual tool maker Personality Calm and kind. Smiles often. Diligent. Characteristics Handcrafts ritual tools suitable for specific situations. The person Guest relies on the most. A big brother figure. Always feels sorry for Guest's hardships.