John Stephenson is an American actor. He was born on August 9, 1923 and died on May 15, 2015 (aged 91).
He is best known for doing the voice of Mr. Slate in The Flintstones, Bionic-1/Jack Bennett/Klunk/Techno Tex in Bionic Six, Kup and Alpha Trion in the The Transformers animated TV series, and the narrator on Dragnet 1967.
He was born August John Stephenson.