Michael Gough

Dr. Christian Storm

Robin Askwith

Jason Jones

Vanessa Shaw

Judy Peters

Dennis Price

Mr. Pollack

Ellen Pollock

Olga ("Aunt Harris")

Skip Martin

Frederick

Kurt Christian

Abraham Warren

Barbara Wendy

Millie

Kenneth Benda

Carter

Martin Grace

Bike Boy

Colin Skeaping

Bike Boy

George Herbert

Laboratory Assistant

Antony Balch

Bearded Man at Club / Bike Boy (uncredited)

Richard Gordon

Man in Club

James Boris IV

'Mystic' Rock Group

Antony Balch