On screen
Cast
78 credited performers
Robin Williams
Mork
Pam Dawber
Mindy McConnell
Ralph James
Orson (Voice)
Conrad Janis
Fred McConnell
Tom Poston
Mr. Bickley
Jay Thomas
Remo DaVinci
Gina Hecht
Jean DaVinci
Jim Staahl
Nelson Flavor
Elizabeth Kerr
Cora Hudson
Robert Donner
Exidor
Jonathan Winters
Mearth
Jeffrey Jacquet
Eugene
Patrick Cranshaw
The Old Man
Joe Regalbuto
Character not listed
Foster Brooks
Miles Sternhagen
Shelley Fabares
Cathy McConnell
Morgan Fairchild
Susan
Raquel Welch
Captain Nirvana
Vicki Frederick
Sutra
Debra Jo Fondren
Kama
Mike Mandel
Character not listed
Melissa Francis
Character not listed
Noah Hathaway
Character not listed
Kim Fields
Character not listed
Richard Moll
Baba Gentle
Barry Van Dyke
Dan Phillips
Don Galloway
Character not listed
Barbara Billingsley
Character not listed
Lyle Waggoner
Character not listed
Paul Reubens
Dickie Nimitz
Tom Sullivan
Character not listed
James Staley
Character not listed
Marilyn Kagan
Althea
Dick Yarmy
Character not listed
Dana Hill
Girl Scout
Charles Lane
Character not listed
Beverly Sanders
Character not listed
David Letterman
Ellsworth
Jillian Kesner
Judi Marino
John Larroquette
Baba Hope
Pamela Sye
Pamela
Susan Lawrence
Sally
Ed Bernard
Officer Boyd
Brion James
George
Kit McDonough
Marcia
Tom Kindle
Rick
Michael W. Schwartz
Deli Customer (uncredited)
Henry Winkler
Fonzie
Penny Marshall
Laverne Defazio
Geoffrey Lewis
Deputy Tilwick
Bruce M. Fischer
The Big Man
Henry Polic II
Dr. Benton Phillips
Hugh Gillin
Dave
Stanley Kamel
Charlie
Lee Weaver
Gus
Charles Bloom
Daniel Pierson
Randy Brooks
Stan Jackson
Cary Zateslo
Tommy Nesbitt
Stephanie Kayano
Stephanie
Amy Tenowich
Lola
Rance Howard
Guard
Hillary Horan
Young Girl
Johnnie Decker
Man
Lorrie Mahaffey
Ann
Robert Hogan
Captain Chapman
Larry Gelman
Mr. Al Klevins
William Bumiller
Derrick
Susan Elliot
Rainbow
David Ketchum
The Salesman
Ysabel MacCloskey
The Woman
Shirley Jo Finney
Nurse #1
Jack Dodson
Ricky
Blanche Bronte
Rosa
Angela Aames
Girl #1
Lisa Katz
Girl #2
James Jarnigan
Boy #1
Scott Marshall
Scott
Jim Gatherum
Boy #2