Sidorovich is the long-standing trader in the S.T.A.L.K.E.R. series, first encountered in the Cordon area of Shadow of Chernobyl, where players sell loot and buy supplies before heading deeper into the Zone. His gruff, laconic manner made him one of the franchise's most recognisable non-player characters, and short clips of his voice have circulated among fans as shorthand for the games' bleak, post-apocalyptic atmosphere. The sound remains popular because it instantly signals that world, even in short edits far removed from the original game.