罗宾·威廉姆斯

Robin McLaurim Williams

饰：菲利普教授 Professor Philip Brainard

马西娅·盖伊·哈登

Marcia Gay Harden

饰：莎拉 Dr. Sara Jean Reynolds

克里斯托弗·麦克唐纳

Christopher McDonald

饰：Wilson Croft

雷蒙德·J·巴里

Raymond J. Barry

饰：Chester Hoenicker (as Raymond Barry)

克兰西·布朗

Clancy Brown

饰：Smith

泰德·拉文

Ted Levine

饰：Wesson

威尔·惠顿

Wil Wheaton

饰：Bennett Hoenicker

伊迪·迈克莱尔

Edie McClurg

饰：Martha George

裘蒂·班森

Jodi Benson

饰：Weebo

莱斯利·史蒂芬森

Leslie Stefanson

饰：Sylvia

Malcolm Brownson

饰：Father

Benjamin Brock

饰：Window Boy

戴金·马修斯

Dakin Matthews

饰：Minister

萨姆·洛伊德

Sam Lloyd

饰：Coach Willy Barker

斯科特·迈克尔·坎贝尔

Scott Michael Campbell

饰：Dale Jepner

Bob Sarlatte

饰：Rutland Coach

Bob Greene

饰：Referee

斯科特·马丁·格尔琴

Scott Martin Gershin

饰：Flubber

Ryan Van de Kamp Buchanan

Ryan Van de Kamp Buchanan

饰：Student

Martin Andris

饰：Basketball Fan (uncredited)

Teresa Couch

饰：Basketball Fan (uncredited)

Ken Hoffman

Ken Hoffman

饰：Neighbor (uncredited)

Mylo Ironbear

饰：Basketball Fan (uncredited)

亚历山大·卡内拉科斯

Alexander Kanellakos

饰：Basketball Fan (uncredited)

南希·奥尔森

Nancy Olson

饰：Secretary at Ford Motor Company (uncredited)

Scott Trimble

饰：Basketball Fan (uncredited)

詹姆斯·D·韦斯顿二世

James D. Weston II

饰：Basketball Fan (uncredited)

皮特·怀特

Peter White

饰：Mr. Sylvan (uncredited)

斯科特·马丁·格尔琴

Scott Martin Gershin

裘蒂·班森

Jodi Benson

Elmer J. Howard

饰：Basketball Fan