A funny fact that some people may not know: in russian translation of Half-Life 2, Gman was voiced by two voice actors. In the main game, he is voiced by Oleg Fedorov, while in following episodes he is voiced by Nikita Prozorovsky. The latter got hired again to participate in unofficial russian translation of Half-Life Alyx made by the localizing team GamesVoice (with the rest of original ru voice team!).

The russian community of the game was unable to decide which voice is better My opinion is that these voices are perfectly good where they appeared at the time and there is no point in trying to replace one to another in already released games except for curiosity.