Frank Welker

Barney Rubble

Henry Corden

Fred Flintstone

B.J. Ward

Betty

Jean Vander Pyl

Wilma / Mrs. Slate

Megan Mullally

Pebbles

Jerry Houser

Bamm-Bamm

June Foray

Various voices

William Hanna

William

John Stephenson

Mr. Slate

Roger Rose

Additional Voices (voice)