Eddie Deezen
— Menlo Schwartzer
Linda Kerridge
— Sparkle / Florinda Budnick
Terry Kiser
— Mr. O'Finley
Eric Stoltz
— Chuck
Jeffrey Rogers
— Bob
Lyle Waggoner
— Chief Boyardee
Lucinda Dooling
— Lindy Sue
Peter Isacksen
— Beaker
Corinne Bohrer
— Cindy Lou
Morgan Paull
— Chuck's Dad
Ruth Buzzi
— Chuck's Mom
Cleavon Little
— Daddy O
Carol Wayne
— Mrs. O'Finley
Biff Manard
— Bob's Father
Tom Villard
— Jocko O'Finley
Lucy Lee Flippin
— Mrs. Big Head
Brinke Stevens
— Student Fan (uncredited)
Joy Michael
— Hot Potato #1
Britt Helfer
— Hot Potato #2
Ralph Seymour
— Becker
Ron Palillo
— Deputy Underwear
Dick Dale
— Himself
Fred Asparagus
— Fat Boy #1