John Winfield Stephenson (August 9, 1923, Kenosha, Wisconsin, USA – May 15, 2015, Woodland Hills, Los Angeles, California, USA) was an American actor, most active in voice-over roles. He has also been credited as John Stevenson. Stephenson never gave any interviews and was rarely seen in public, although he did make an appearance at BotCon 2001. He started his acting career in numerous television shows in the 1950s and into the 1970s.
Stephenson provided the voice for commercials of the era, including spots for Peter Pan Peanut Butter featuring character actor Jesse White.
For several decades, he worked for Hanna-Barbera Productions, performing for many of its 1960s and 1970s animated television series. His first role for the company was for The Flintstones's eleventh episode, "The Golf Champion". He played The Golf Commentator, a lodge member and Left-Foot Charlie. Stephenson's most notable role for Hanna-Barbera was as Mr. Slate, Fred Flintstone's hard-edged boss at Slate Rock and Gravel Company. He played Mr. Slate from the original series up through to the present, although he provided the voices of the majority of the show's guest characters, including Joe Rockhead on several occasions, making him one of the main cast members of the show.
Other notable roles include Fancy-Fancy on Top Cat, multiple characters on Scooby-Doo, Colonel Fusby on Breezly and Sneezly, Chief Winchley on the Squiddly Diddly segments from The Atom Ant/Secret Squirrel Show, Tog, Rollo, Pondo and Ork in Moby Dick and Mighty Mightor and Luke and Blubber Bear in the Wacky Races, among many others.
| Year | Image | Character | Title |
|---|---|---|---|
| 1994 | 
|
Mr. Slate | A Flintstones' Christmas Carol |
| 1993 | 
|
Mr. Slate | A Flintstone Family Christmas |
| 1991-1992 | 
|
Doggie Daddy | Yo Yogi! |
| 1983 | 
|
Chief Quimby | Inspector Gadget |
| 1982 | 
|
Doggie Daddy | Yogi Bear's All-Star Comedy Christmas Caper |
| 1982 | 
|
Butler | Yogi Bear's All-Star Comedy Christmas Caper |
| 1982 | 
|
Announcer | Yogi Bear's All-Star Comedy Christmas Caper |
| 1982 | 
|
Narrator | Amigo and Friends |
| 1982 | 
|
Narrator | CantinflaShow |
| 1980 | 
|
Doggie Daddy | Yogi's First Christmas |
| 1980 | 
|
Mr. Dingwell | Yogi's First Christmas |
| 1979 | 
|
Hairy Scary | Casper's First Christmas |
| 1979 | 
|
Doggie Daddy | Casper's First Christmas |
| 1979 | 
|
Hairy Scary | Casper Saves Halloween |
| 1979 | 
|
Count Rockula | The Flintstones Meet Rockula and Frankenstone |
| 1979 | 
|
Police Chief | The Flintstones Meet Rockula and Frankenstone |
| 1977-1978 | 
|
Mildew Wolf | Scooby's All Star Laff-A-Lympics |
| 1977-1978 | 
|
Doggie Daddy | Scooby's All Star Laff-A-Lympics |
| 1977-1978 | 
|
Dread Baron | Scooby's All Star Laff-A-Lympics |
| 1977-1978 | 
|
The Great Fondoo | Scooby's All Star Laff-A-Lympics |
| 1977 | 
|
Mr. Slate | A Flintstone Christmas |
| 1974-1975 | 
|
Reuben Kinkaid | Partridge Family 2200 A.D. |
| 1973-1975 | 
|
Hadji | Jeannie |
| 1973-1974 | 
|
Cousin It | The Addams Family |
| 1972 | 
|
Polecat | A Christmas Story |
| 1972 | 
|
Dachshund | A Christmas Story |
| 1967-1969 | 
|
X the Eliminator | Birdman and the Galaxy Trio |
| 1967-1969 | 
|
Cumulus | Birdman and the Galaxy Trio |
| 1967-1969 | 
|
Reducto | Birdman and the Galaxy Trio |
| 1966-1967 | 
|
Professor Conroy | Frankenstein, Jr. and the Impossibles |
| 1966-1967 | 
|
Mad Inventor | Frankenstein, Jr. and the Impossibles |
| 1966-1967 | 
|
General | Frankenstein, Jr. and the Impossibles |
| 1966-1967 | 
|
Plant Man | Frankenstein, Jr. and the Impossibles |
| 1966-1967 | 
|
Narrator | Frankenstein, Jr. and the Impossibles |
| 1965-1967 | 
|
Chief Winchley | The Secret Squirrel Show |
| 1965-1967 | 
|
Narrator | The Atom Ant Show |
| 1960-1966 | 
|
Mr. Slate | The Flintstones |
| 1964-1965 | 
|
Colonel Fuzzby | The Peter Potamus Show |
| 1964 | 
|
Dr. Benton C. Quest | Jonny Quest |
| 1961-1962 | 
|
Fancy Fancy | Top Cat |
| 1961-1962 | 
|
Sergeant 1 | Top Cat |
| 1961-1962 | 
|
Sergeant 2 | Top Cat |
| 1961-1962 | 
|
Sergeant 3 | Top Cat |
| 1961-1962 | 
|
Captain | Top Cat |
| 1961-1962 | 
|
Purser | Top Cat |
| 1961-1962 | 
|
Maharajah | Top Cat |
| 1961-1962 | 
|
Hotel Manager | Top Cat |
| 1961-1962 | 
|
Crime Boss | Top Cat |
| 1961-1962 | 
|
Jewelry Executive | Top Cat |
| 1961-1962 | 
|
Airline Representative | Top Cat |
| 1961-1962 | 
|
Baseball Announcer | Top Cat |
| 1961-1962 | 
|
Mayor | Top Cat |
| 1961-1962 | 
|
Boarding Representative 2 | Top Cat |
| 1961-1962 | 
|
Flitney J.J. Flitney of the Derby Committe | Top Cat |
| 1961-1962 | 
|
Gutenberg | Top Cat |
| 1959-1961 | 
|
Doggie Daddy | The Quick Draw McGraw Show |
| 1957-1960 | 
|
Narrator | The Ruff & Reddy Show |