Several characters have made references to Ermey and the character of Hartman. In the game "Fallout 3", a recruitable companion is named Sergeant RL-3, a modified military robot with a personality very similar to Ermey (the companion's name is a reference to Ermey's initials wherein the 3 is leetspeak for the letter E). In the ' expansion there is a character named "Lieutenant Emry" that speaks some of Ermey's signature lines from "Full Metal Jacket". In ', the drill sergeant from the initial boot camp stage had dialogue and mannerisms very similar to Ermey's character in "Full Metal Jacket".