Full Cast
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Tom Baker
The Doctor / Meglos
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Lalla Ward
Romana II
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John Leeson
K9 (voice)
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Bill Fraser
General Grugger
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Frederick Treves
Lieutenant Brotadac
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Edward Underdown
Zastor
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Jacqueline Hill
Lexa
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Colette Gleeson
Caris
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Crawford Logan
Deedrix / Meglos (voice) (uncredited)
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Christopher Owen
Earthling
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Simon Shaw
Tigellan Guard
