Cast
John Stephenson
Mr. Slate (voice)
Roger Rose
Additional Voices (voice)
Don Messick
(voice)
Russi Taylor
(voice)
Frank Welker
Barney Rubble (voice)
Henry Corden
Fred Flintstone (voice)
B.J. Ward
Betty (voice)
Jean Vander Pyl
Wilma / Mrs. Slate (voice)
Jerry Houser
Bamm-Bamm (voice)
Megan Mullally
Pebbles (voice)
June Foray
Various voices (voice)
William Hanna
Bill (voice)
Joseph Barbera
Joe (voice)