John Stephenson (actor)

John Winfield Stephenson (August 9, 1923 – May 15, 2015) was an American actor. He was most active voice-over roles.
He has also been called John Stevenson. Stephenson has never given any interviews and was rarely seen in public, although he did make an appearance at BotCon 2001.
Since the death of Harvey Korman in 2008, he was one of the last surviving voice actors from the 1960s animated sitcom, "The Flintstones", in which he played Fred Flintstone's boss, Mr. Slate.
Stephenson died from Alzheimer's disease, aged 91.