Anthony Eustrel

Harry Domain

Eugene Leahy

Dr. Gall

Derek Tansley

Dr. Hellman

Maurice Bannister

Jacob Berman

John Stuart

Alquist

Evelyn Moore

Emma

Joy Adamson

Sulla, a robotess

Patrick Troughton

Radius, a robot

Dermot Palmer

Primus, a robot

Viola Merrett

Helena, a robotess

John Baker

Marius, a robot

Pamela Stirling

Helena Glory