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) the player will occasionally see his face on pieces of technology, such as unplugged televisions. The G-Man is seen operating a very wide range of machinery and technology, ranging from cellular phones and sealed steel doors to nuclear warheads and teleporters. In addition, he also appears to have the ability to plant subconscious suggestions or commands in others through psychic or hypnotic means, as he demonstrates on Alyx Vance in "Half-Life 2: Episode Two" by ordering her to relay the words "prepare for unforeseen consequences" to her father Eli Vance, which she eventually does, apparently with no awareness of what