William Hartnell
The Doctor (1)
Acting
Anneke Wills
Polly
Acting
Michael Craze
Ben Jackson
Acting
Patrick Troughton
The Doctor (2) (uncredited)
Acting
Robert Beatty
General Cutler
Acting
David Dodimead
Barclay
Acting
Dudley Jones
Dyson
Acting
Alan White
Schultz
Acting
Earl Cameron
Williams
Acting
Callen Angelo
Terry Cutler
Acting
John Brandon
American Sergeant
Acting
Shane Shelton
Tito
Acting
Steve Plytas
Wigner
Acting
Christopher Matthews
Radar Technician
Acting
Ellen Cullen
Geneva Technician
Acting
Christopher Dunham
R/T Technician
Acting
Glenn Beck
TV Announcer
Acting
Roy Skelton
Cybermen (voice)
Acting
Peter Hawkins
Cybermen (voice)
Acting
Harry Brooks
Cyberman
Acting
Reg Whitehead
Cyberman
Acting
Gregg Palmer
Cyberman
Acting