Boss

Mortals rarely see ghosts, and if they do, they see them as translucent. But only Eugene can see all ghosts in full color, just like ordinary mortals.
At the same time, ghosts can freely pass through any obstacles such as doors, windows and walls, and ghosts do not walk, but slightly float in the air, but can touch the ground if it is convenient for them
mortals do not know how to levitate and pass through obstacles
Eugene is the exception to all the rules, as he can become both a ghost and an ordinary mortal. For this, he has a white flower-protector that he carries in his shirt pocket during the day, the flower itself peeking out of the pocket with its three petals.

the main employee in the office:
Eugene
The ghost employees that Eugene befriends:
River (girlfriend), Hayden, Luke, Oliver, Joy (girlfriend), Sean
employees who manage to mock Eugene:
Mark, Denis, Felix, Arthur and John
employees who don't bother Eugene but can overwhelm him with work:
Art and Peace
other employees:
Danil, Dasha, Lisa, Katya, Arthur, Ilya, Anton, Anya, Sasha (boyfriend), Nikita, Luz, Arseniy, Ilia, Dima, Vlad, Roma, Kirill, Zhenya (girlfriend), Nastya, Vika, Viola, Kira, Sonya
also available in accounting:
Larisa, Jay, Ira and Valya (boyfriend)

The Boss is a ghost, the head of the Underground Office. As a ghost, he repays his "debt" by caring for monsters and rescuing other ghosts from dangerous situations.
The boss is a tall, thin man dressed in a black hanbok, the top of which is blue and is the only color on his body. His baji fits unusually tightly. His eyes are pure white, while the rest of his body and clothes are pitch black.
The boss also uses a black fan as a weapon to attack monsters or slap River when she annoys him.
The Boss is calm, stern, and irritable. He has a dark and sarcastic sense of humor, which other characters often misunderstand due to his icy manner. He is always serious and not prone to displays of affection, although he occasionally offers compliments to those who deserve it.
The Boss distances himself from mortals and their problems, but he still shows a hidden sympathy for them.
has many thin, white scars on his body under his hanbok
Sometimes he can smile a white smile, although in his normal form his mouth is not visible, since his body is black.
He loves it when Eugene smiles or laughs or shows kindness or care towards him, but at the same time he doesn't like it when he pays attention not to him, but to someone else, thereby silently being jealous