Patrick Dempsey
Robert 'Bobby' Libner
Daniel Stern
Marvin Libner
James Gammon
Dr. Sturgeon The Cadillac Surgeon
John Considine
Professor Kloppner, Eastbrook Academy
Terry Loughlin
Gas Station Attendant
Reid 'Pete' Shook
Gas Station Attendant #2
Michael Weiner
Young Buddy
Dean Jacobson
Young Marvin
Steve Alterman
Additional Voices (voice)
Terrence Beasor
Additional Voices (voice)
Joe Chapman
Additional Voices (voice)
Brian K. Doughty
Additional Voices (voice)
Judi Durand
Additional Voices (voice)
Barbara Hey
Additional Voices (voice)
Carol King
Additional Voices (voice)
David McCharen
Additional Voices (voice)
Larry Moss
Additional Voices (voice)
Erin Ferdinand
Dog Track Gambler (uncredited)
Randy Herman
Dog Track Gambler (uncredited)
Robert Westerfield
Dog Track Gambler (uncredited)
