Mumyeong (無名) Male, 176cm Meteorologist A being who fell into the Underworld for some reason. Because he lost his name, he almost failed to cross the Sanzu River even after arriving in the afterlife. Neither his name nor the cause of his death is recorded in the Register of the Living and Dead. He has a calm and ordinary personality. He appears composed in most situations, but he is actually quite emotional. He has somewhat faded grey hair and empty-looking pure white eyes. His long hair is tied in a ponytail. He often wears official robes, specifically a sky-blue hanbok with patterns resembling the heavens. 'Mumyeong' is a temporary name he gave himself after losing his original one. As he is still a bit clumsy at his job, he relies on Seowol quite a bit. He uses polite speech with most beings.

Hyeon Male, 189cm Grim Reaper He originally had no name, but Mumyeong gave him one. The name has no particular meaning; Mumyeong just named him whatever came to mind. As the Grim Reaper in charge of Mumyeong, he decided to make Mumyeong an official of the Underworld since he couldn't cross the Sanzu River. Currently, he has become friends with Mumyeong, who named him, and follows him well. He shows little expression. His personality isn't bad, but his lack of expression makes him seem blunt. Knowing this, he expresses his emotions directly through words. He is Chuhwa's junior and uses polite speech toward Chukyeong and Chuhwa. He has pitch-black hair and piercing golden eyes. He wears a dark black Grim Reaper hanbok. He wears small prayer beads on his arm like a bracelet. His main weapon is a longsword.

Dongbaek Male, 183cm Dokkaebi The first being Mumyeong met when he fell into the Underworld, excluding Hyeon. For unknown reasons, he is friendly toward Mumyeong. He has many different talents, but if asked why, he brushes it off with words like 'Because I'm a Dokkaebi~'. He has a playful personality and loves interesting things. He occasionally crosses the line, but he isn't fundamentally a bad person. He has two-toned hair, white and red, based on a white foundation. He has olive-colored (dark green) eyes. He wears a modified red-accented hanbok that he tailored himself. He has no specific weapon and uses Dokkaebi spiritual power.

Chuhwa Female, 177cm Grim Reaper Hyeon's superior and the one who briefly guided Mumyeong when he lost Hyeon. She is Chukyeong's younger sister. She has a fundamentally tsundere personality. She is hot-tempered but seems to take good care of others in her own way. She has long brown hair and light green eyes. She wears a black Grim Reaper hanbok. Her main weapon is a giant hammer (which she keeps in a small form normally). She usually treats Chukyeong formally in public, but when her emotions flare up, she loses her temper as usual and calls him 'Oppa'.

Chukyeong Male, 186cm Left Chancellor (Jwameongsang) The one who appointed Mumyeong as a Meteorologist. Chuhwa's older brother. He seems gentle, but surprisingly, he enjoys needles others with a smile. Of course, he is kind to those he is close to. He is friendly toward Mumyeong, Hyeon, Chuhwa, and Seowol. He wears his long brown hair in a half-up style and has cherry blossom-colored eyes. He wears a hanbok based on light green with pink fabric accents. He uses casual speech with most people.

Seowol Male, 180cm Wind Soul Official → Assistant Meteorologist Mumyeong's senior and helper. He has been assisting Mumyeong since he was appointed as a Meteorologist. He has a gentle, puppy-like personality and gets along with everyone. He rarely gets angry and is good at his job. Although he is Mumyeong's subordinate, he is also his senior, so he uses casual speech with Mumyeong. He has sky-blue hair and sky-blue eyes. His official uniform is a hanbok mixed with dark blue, sky blue, and black.

Male, 188cm Grim Reaper A high-ranking Grim Reaper who is effectively the superior of Hyeon and Chuhwa. Even if he seems like he doesn't work much, he is the type to definitely finish what needs to be done. His personality is languid and sly; he can be quite smooth-talking. He shows the brazenness of avoiding tasks he finds unimportant by any means necessary. Except for Chukyeong, he uses casual speech with almost everyone. He has white hair in a relatively short half-up style and black eyes. He took the black hanbok that serves as the Grim Reaper's official robe and reformed it to look like a modern suit according to his own taste. Nevertheless, since the base is a hanbok, there are parts that still feel like one, though it is almost identical to a suit. He drapes his formal coat over his shoulders like a cape. He wears an earring in only one ear and rings on the thumb and middle finger of his right hand.