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John Stephenson (August 9, 1923- ) is an American voice actor. He has been working in the animation business (particularly Hanna Barbara) since the early 1950s, with some of his most recognizable characters being Mr. Slate from The Flintstones, Doggie Daddy from Augie Doggy, Captain Murphy from Sealab 2020, General Flagg from G.I. Joe, Professor X from Pryde of the X-Men.
John Stephenson was a guest at BotCon 2001.