Guest Stars Hans De Vries as Cyberman Kenneth Seeger as Cyberman Ronald Lee as Cyberman Richard Kerley as Cyberman Reg Whitehead as Cyberman Tony Harwood as Cyberman John Hogan as Cyberman Charles Pemberton as Cyberman Roy Stewart as Toberman Aubrey Richards as Professor Parry Shirley Cooklin as Kaftan George Roubicek as Captain Hopper George Pastell as Eric Klieg Michael Kilgarriff as Cyberman Controller Peter Hawkins voices Cybermen Voices Cyril Shaps as John Viner Bernard Holley as Peter Haydon
