G-Man (slang) G-Man (slang) G-Man (short for "Government Man") is an American slang term for special agents of the United States Government. It is specifically used as a term for a Federal Bureau of Investigation (FBI) agent. "G-Man" is also a term used for members of G Division, essentially a British anti-rebel police unit operating out of Dublin Castle prior to Irish Independence in 1922. Colonel Ned Broy uses the term in his official testimony for the Irish Army's Bureau of Military History in their archive of the Easter Rising (1916) and the Irish War of Independence (1919-1921). According to the "Merriam-Webster
G-Man (Half-Life) "Half-Life 2" model is based, was originally slated to be the model for Dr. Breen. It was chosen for the G-Man's appearance after Bill Van Buren created a modified image of Sheldon, with chopped-off hair and a scaled down face shape. Doug Wood, who designed the facial expressions of the "Half-Life 2" G-Man model, wanted the player to never quite know what side the G-Man was on by giving him ambiguous facial expressions. The G-Man appears throughout the series either in monologue scenes which occur at key points in the story, or in live gameplay, where he can be seen