G-Man (Half-Life) refers to simply as his "employers". His mysterious nature has made him an icon of the "Half-Life" series, with his identity and motives remaining almost completely unexplained. The G-Man's name comes from "G-Man", an American colloquialism meaning "Government Man". However, within the "Half-Life" games, he is identified by this name only in the program code and the multiplayer profile menu as a default name option, not within the story itself; his name is derived from his "Half-Life" model and entity name and has since been reused in subsequent games of the series. His name has been confirmed and he has
G-Man (slang) Dictionary", its first known use in America was in 1928. The earliest citation in the "Oxford English Dictionary" for the American usage is 1930 from a book on Al Capone by FD Pasley. In FBI mythology, the nickname is held to have originated during the arrest of gangster George "Machine Gun" Kelly by agents of the Bureau of Investigation (BOI), a forerunner of the FBI, in September 1933. Finding himself unarmed, Kelly supposedly shouted, ""Don't shoot, G-Men! Don't shoot, G-Men!"" This event is dramatized in the 1959 film "The FBI Story" and this dramatization is referenced in the 2011 film