Ralph Macchio
17 Year Old Tim (voice)
Eric Idle
Evil Martin (voice)
Hynden Walch
Jenny Mcbride (voice)
Harvey Korman
Floyd (voice)
Andrea Martin
Muriel (voice)
William H. Macy
Justin (voice)
Dom DeLuise
Jeremy (voice)
Peter MacNicol
Narrator (voice)
Andrew Ducote
10 Year Old Timmy (voice)
Arthur Malet
Mr. Ages (voice)
Doris Roberts
Auntie Shrew (voice)
Phillip Van Dyke
Young Martin (voice)
Darleen Carr
Helen (voice)
Jamie Cronin
Teresa (voice)
Jameson Parker
Troy (voice)
Phillip Glasser
Reformed 19 Year old Martin (voice)
Whitney Claire Kaufman
Cynthia (voice)
Steve Mackall
Professor Valentine (voice)
Kevin Michael Richardson
Brutus (voice)
Meshach Taylor
Cecil (voice)
Debi Mae West
Mrs. Jonathan Brisby (voice)
Al Jarreau
The Balladeer (voice)
Bobbi Page
The 2nd Balladeer (voice)