Zina originated from the Moscow Region of the U.S.S.R., her parents arrested during Stalin’s 1938 Great Purge on unspecified charges, likely politically motivated. She enlisted in the First Squad in 1940, two years before the primary narrative’s events.

Her expertise spanned esoteric disciplines, evidenced by national victories in numerology and dream-perception competitions. Foreign language fluency is suggested among her skills. Records note repeated insubordination resulting in disciplinary measures, though specifics are undisclosed.

During missions, she wielded a flamethrower as her primary weapon. Details regarding her later operations, interpersonal dynamics within the squad, or character progression beyond these points remain undocumented. Official sources do not elaborate on her narrative arc or contributions outside the recorded period.