Robin Williams
Profesorul Philip BrainardMarcia Gay Harden
Dr. Sara Jean ReynoldsChristopher McDonald
Wilson CroftTed Levine
WessonClancy Brown
SmithRaymond J. Barry
Chester Hoenicker (creditat Raymond Barry)Wil Wheaton
Bennett HoenickerJodi Benson
Weebo (voce)Les Mayfield
Bill Walsh
John Hughes
Samuel W. Taylor
Robin Williams
Profesorul Philip BrainardMarcia Gay Harden
Dr. Sara Jean ReynoldsChristopher McDonald
Wilson CroftTed Levine
WessonClancy Brown
SmithRaymond J. Barry
Chester Hoenicker (creditat Raymond Barry)Wil Wheaton
Bennett HoenickerJodi Benson
Weebo (voce)Ricardo Mestres
John Hughes
Danny Elfman
Dean Cundey
Harvey Rosenstock