Richard Benjamin as Stuart Selsome

James Coco as Henri

Scatman Crothers as Sam

Ruth Gordon as Arvilla Droll

Cloris Leachman as Mildred Carruthers

Cleavon Little as Jackson

Roddy McDowall as Jenkins

Robert Morley as Bernstein

Richard Mulligan as Marvin Dummitz

Tony Randall as Henry Motley

Dirk Benedict as Jeff Stevens

Willie Aames as Kenny Stevens

Stephanie Faracy as Babbette

Stephen Furst as Merle

Richard Masur as Georgie Carruthers

Meat Loaf as Scum

Pat McCormick as Carnival Barker

Vincent Price as Milton Parker

Avery Schreiber as Zoo Keeper

Arnold Schwarzenegger as Lars

Liz Torres as Lady Zero

Carol Wayne as Nurse

Stuart Pankin as Duane

Maureen Teefy as Lisa

Henry Polic II as Naked Policeman

Hal Landon Jr. as Cornfield

Dale Kalberg as Docent

Bobby Rolofson as Boy In Museum