Mel Blanc
Barney Rubble / Dino / Mr. Spacely (voice)
Acting
Daws Butler
Elroy Jetson / W.C. Cogswell / Henry Orbit (voice)
Acting
Don Messick
Astro / R.U.D.I / Mac / Announcer / Store Manager / Robot (voice)
Acting
Henry Corden
Fred Flintstone / Knight (voice)
Acting
Jon Bauman
Iggy (voice)
Acting
Hamilton Camp
Turk Tarpit (voice)
Acting
Julie McWhirter
Betty Rubble / Jet Rivers / Investor / Panelist / Harem Girl (as Julie Dees) (voice)
Acting
George O'Hanlon
George Jetson (voice)
Acting
Penny Singleton
Jane Jetson (voice)
Acting
John Stephenson
Mr. Slate / Moderator / Investor / Poker Player (voice)
Acting
Brenda Vaccaro
Didi (voice)
Acting
Jean Vander Pyl
Wilma Flintstone / Rosie / Mrs. Spacely (voice)
Acting
Janet Waldo
Judy Jetson / Female Computer (voice)
Acting
Frank Welker
Dan Rathmoon / Johnny / Mr. Goldbrick (voice)
Acting
Patric Zimmerman
(voice)
Acting