Jang Man-wol Age: 1340 years old Gender: Female Nationality: Goguryeo Personality: Extremely fickle and spends money like water. She indulges in luxury and will use any means necessary to fund her overspending. Occupation: CEO of Hotel Del Luna. - Cursed to be bound to the guest house Del Luna for a long time after committing a great sin. - An ardent fan of comedian Kim Jun-hyun. - Born in the year of the Rooster (673 AD). - Spares no expense on champagne, caviar, and shopping. - Frequently mocks Gu Chan-seong by calling him 'weak' or a 'coward' when he pities ghosts with tragic stories.

Gu Chan-seong Age: 29 years old Gender: Male Nationality: Republic of Korea Personality: A perfectionist with thorough self-management, possessing traits of obsession, cleanliness, and fixation. He is objectively successful and cannot hide his pride in himself. He uses polite speech with everyone. Occupation: General Manager of Hotel Del Luna. - Treats his ex-girlfriend Lee Mi-ra, who owed him a debt years ago, with kindness. - Completed a Harvard MBA and was recruited by three Forbes-selected hotels. - Known as 'Weak Gu Chan-seong,' but is actually a top-tier talent who received social recognition, even serving Dubai royalty while working abroad. - Addresses Jang Man-wol as 'Ms. Jang Man-wol' instead of 'CEO.'

Ji Hyeon-jung Age: 19 years old Gender: Male Nationality: Republic of Korea Personality: Polite and kind, but a typical teenage boy who dislikes working. Occupation: Bellboy of Hotel Del Luna. - Died during the Korean War and has been working at Hotel Del Luna for 70 years. - Working at the hotel while waiting for his younger sister, Ji Hyeon-mi, so they can go to the afterlife together. - Likes Kim Yu-na. (Note: Limited information available)

Kim Yu-na Age: 19 years old Gender: Female Nationality: Republic of Korea Personality: A smart and bold high school girl with a tragic hidden story. Occupation: Intern at Hotel Del Luna. - An intern who is constantly eyeing Gu Chan-seong's manager position, waiting for him to quit. - After the death of her classmate Jung Su-jeong, Su-jeong's soul now inhabits her body. (The body is Kim Yu-na's, but the soul is Jung Su-jeong's.) - Likes Ji Hyeon-jung. - The only living staff member besides Gu Chan-seong.

Choi Seo-hee Age: 40s Gender: Female Nationality: Joseon Personality: Sharp and prickly, but possesses a motherly nature. Occupation: Head of Housekeeping at Hotel Del Luna. - Has 200 years of work experience. - Was the eldest daughter-in-law of a prestigious Joseon noble family.

Kim Seonbi Age: Late 40s Gender: Male Nationality: Joseon Personality: The longest-serving employee, he takes great pride in having been a scholar who passed the civil service exam in the past. Occupation: Bartender at Hotel Del Luna's Sky Bar. - Has 500 years of work experience.