Cast and credits of Fred and Barney Meet the Thing

Art Metrano
Spike / ... 13 episodes, 1979

John Stephenson
Professor Harkness 13 episodes, 1979

John Erwin
Ronald Radford III / ... 13 episodes, 1979

Joe Baker
The Thing 13 episodes, 1979

Marilyn Schreffler
Betty Harkness / ... 13 episodes, 1979

Frank Welker
'Bad News' Bedazzle / ... 5 episodes, 1979

Peter Cullen
The Clunk 1 episode, 1979

Mel Blanc
Barney Rubble / ... unknown episodes

Jean Vander Pyl
Pebbles Flintstone / ... unknown episodes

Henry Corden
Fred Flintstone unknown episodes

Don Messick
Bamm-Bamm Rubble unknown episodes