Gavin Mitchell (born 16 December 1964) is a Scottish actor and comedian, best known for playing Robert "Boaby the Barman" Taylor in the Scottish sitcom Still Game. Mitchell had a recurring role as Callum McIntyre in the drama series Monarch of the Glen, played various roles in sketch show Velvet Soup, and has appeared in sitcoms Empty, Happy Hollidays and You Instead. He played a recurring character in crime drama The Field of Blood. He appeared in two episodes of series 7 of the children's adventure series M.I. High, in which he also voiced The Mastermind, taking over from Brian Cox.He can currently be seen playing Grand Duke Sergei Alexandrovich in Netflix's The Last Czars.