Gregory Alan Williams

 (born June 12, 1956) is an american voice actor. In Fallout: New Vegas he voices Bruce Isaac, The Lonesome Drifter, Cliff Briscoe, Corporal William Farber, Trent Bascom, Don Hostetler, Cook-Cook, Keith, George, Bill Ronte, Dead Sea, Severus, Karl, Mister Holdout, Greasy Johnny, and additional characters.

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