Dan Aykroyd

Clifford Skridlow / Doctor Detroit

Howard Hesseman

Smooth Walker

Donna Dixon

Monica McNeil

Lydia Lei

Jasmine Wu

T.K. Carter

Diavolo Washington

Lynn Whitfield

Thelma Cleland

Fran Drescher

Karen Blittstein

Kate Murtagh

Mom

Nan Martin

Margaret Skridlow

George Furth

Arthur Skridlow

Peter Elbling

Guptor

John A. Maloney

Commodore

Pershing P. Anderson

Stretch

William Munchow

Professor Artel

Ed Meekin

Professor Durant

Hank Salas

Johnny

Rudolph Kovar

Carson

Peter Aykroyd

Mr. Frankman

Glenne Headly

Miss Debbylike

Annabel Armour

Airline Clerk

Robert Cornthwaite

Professor Blount

Thomas O. Erhart Jr.

Dean Swift

Parley Baer

Judge

Oliver Clark

Shaky Alcoholic Lawyer

Ben Kronen

Bailiff

Lance Kinsey

Street Dude

Andrew Duggan

Harmon Rousehorn

Victoria Brown

Mrs. Fulsom

Blackie Dammett

Eddie Four Eyes

James Brown

Bandleader

Alan Ruck

Student

Marilyn Corwin

Dancer (uncredited)

Sue Bowser

Dream Girl

Derrick Brice

Players Ball Dancer

Steven Williams

Junior Sweet