Lieutenant Polina Borisovna Petrova (Russian: Полина Борисовна Петрова) is one of the five playable protagonists and Operator featured in Call of Duty: Vanguard, and introduced in Call of Duty: Warzone. Polina appears in Call of Duty: Mobile and was added on November 22nd, 2023 during Season 10: 4th Anniversary as part of the Special Agent Lucky Box.