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William Hartnell
The Doctor

Jacqueline Hill
Barbara Wright

William Russell
Ian Chesterton

Maureen O'Brien
Vicki

Peter Sanders
Sita

Peter Craze
Dako

Bill Starkey
Third Xeron / Xeron

Richard Shaw
Lobos

Jeremy Bulloch
Tor

Salvin Stewart
Morok Messenger / Morok Guard

Peter Diamond
Morok Technician / Morok Guard

Lawrence Dean
Morok Guard

Ken Norris
Morok Guard

Ivor Salter
Morok Commander

Michael Gordon
Xeron

Edward Granville
Xeron