Professor Philip Brainard
Dr. Sara Jean Reynolds
Wilson Croft
Chester Hoenicker
Smith
Secretary at Ford Motor Company
Wesson
Bennett Hoenicker
Martha George
Weebo (voice)
Sylvia
Father
Window Boy
Minister
Teenage Boy
Coach Willy Barker
Flubber (voice)
Weebette (voice)
Rutland Coach
Dale Jepner
Referee
Medfield Basketball Player