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
Leon G. Turrou nation against espionage. During his investigation, Turrou used polygraph tests to interview his suspects, perhaps the first of its use by the FBI in an espionage investigation. The subjects of his investigation were Martin Schade, Captain William Drechsel, Karl Friedrich Wilhelm Herrmann, John Baptiste Unkel, Kate Moog and Dr. Ignatz T. Griebl. Turrou's newspaper articles were used as the basis of the film, "Confessions of a Nazi Spy". Leon G. Turrou Leon George Turrou (September 14, 1895 - December 10, 1986) was an FBI Special Agent who was tasked with leading an investigation that located and interrogated Nazi German spies