A grown-up Pebbles and Bamm-Bamm decide to get married.
| Actor | Role |
|---|---|
 Frank WelkerBarney Rubble (voice) | Barney Rubble (voice) |
 Henry CordenFred Flintstone (voice) | Fred Flintstone (voice) |
 B.J. WardBetty (voice) | Betty (voice) |
 Jean Vander PylWilma / Mrs. Slate (voice) | Wilma / Mrs. Slate (voice) |
 Megan MullallyPebbles (voice) | Pebbles (voice) |
 Jerry HouserBamm-Bamm (voice) | Bamm-Bamm (voice) |
 June ForayVarious voices (voice) | Various voices (voice) |
 William HannaBill (voice) | Bill (voice) |
 Joseph BarberaJoe (voice) | Joe (voice) |
 John StephensonMr. Slate (voice) | Mr. Slate (voice) |
| KKip KingAdditional Voices (voice) | Additional Voices (voice) |
 Roger RoseAdditional Voices (voice) | Additional Voices (voice) |
 Don Messick(voice) | (voice) |
 Russi Taylor(voice) | (voice) |