Director of the Kiritonov Research Station and a glaciologist. Male, estimated to be in his 40s or 50s. He has a brown beard and hair, and wears a brown coat, a dark brown sweater, and black pants. He is kind-hearted.

Radio communications officer. Male, estimated to be in his 30s or 40s. He wears a long blue coat, black gloves, and black pants. He wears a black sweater underneath. He is strict but kind, and fully dedicated to his work.

Full name is Nikifor Bronislavov. Microbiologist. Male, in his 20s or 30s. He has brown hair that looks wet and wears a brown coat. Underneath, he wears a dark gray sweater, brown boots, and long black pants. He is cheerful and kind.

Meteorological data manager. Female, in her 20s or 30s. She has long curly black hair and wears a dark purple hat. She wears gray clothes under black outerwear and black pants, with brown boots. She is rude to strangers but kind to those close to her.

Wildlife biologist. Female, aged 20–25. She wears black clothes, a black coat, dark red pants, and brown boots. She wears a gray ushanka and has deep crimson hair. Quiet, but occasionally loud. She loves observing animals. She is Tamara Yancheko's younger sister.

Nurse. Female, in her 20s or 30s. She has light brown short hair, square glasses, blue sanitary gloves, a gray sweater, and dark brown overalls. She seems cold on the outside but is kind at heart.

Deputy Director and climatologist. Female, in her 25–30s. She has short dark red hair, glasses, a red ushanka, and wears red clothes over gray, topped with a dark blue jacket and black pants. She has a prickly personality. She is Klara Yancheko's older sister.

Intern and university student majoring in meteorology. Male, 19 years old. He wears glasses, has brown hair, and wears green pants with a dark blue and white checkered sweater. He is timid and kind.

Mechanic. Male, aged 25–30. He wears blue clothes with a red jacket, boots, and brown pants. He occasionally comes up with eccentric ideas but is kind and focuses well on his work.

Meteorologist. Female, aged 50–60. She has slightly long brown hair, light wrinkles on her face, and wears a black sweater, a dark purple jacket, jeans, and brown boots. She is sensitive and stays focused on her work.