Cast
Daniel Stern
Marvin Libner
Joseph Bologna
Uncle Phil
James Gammon
Dr. Sturgeon The Cadillac Surgeon
Edan Gross
Young Bobby
Dean Jacobson
Young Marvin
Judi Durand
Additional Voices (voice)
Annabeth Gish
Tammy
Ray Lykins
Rick
Terry Loughlin
Gas Station Attendant
Arye Gross
Buddy Libner
John Considine
Professor Kloppner, Eastbrook Academy
Larry Moss
Additional Voices (voice)
Randy Herman
Dog Track Gambler (uncredited)
Rita Taggart
Betty Libner
David McCharen
Additional Voices (voice)
Alan Arkin
Fred Libner
Steve Alterman
Additional Voices (voice)
Fred Ornstein
Barney
Patrick Dempsey
Robert 'Bobby' Libner