Milo O’Shea

Mr. Zero

Phyllis Diller

Mrs. Zero

Billie Whitelaw

Daisy Devore

Sydney Chaplin

Lieutenant Charles

Julian Glover

Shrdlu

Raymond Huntley

Smithers

Phil Brown

Don

Paddie O'Neill

Mabel

Libby Morris

Ethel

Hugh McDermott

Harry

Bill Nagy

Lawyer

Carol Cleveland

Judy

Bruce Boa

Detective

Kenny Damon

Joe

John Brandon

First cell jailer

Jerome Epstein