On screen
Cast
22 credited performers
William Hartnell
The Doctor
Peter Purves
Steven Taylor
Jackie Lane
Dodo Chaplet
Artwork unavailable
Eric Elliott
Commander
Artwork unavailable
Inigo Jackson
Zentos
Artwork unavailable
Roy Spencer
Manyak
Michael Sheard
Rhos
Artwork unavailable
Kate Newman
Mellium
Artwork unavailable
Ian Frost
Baccu
Artwork unavailable
Stephanie Heesom
Guardian
Paul Greenhalgh
Guardian
Artwork unavailable
Edmund Coulter
Monoid
Artwork unavailable
Frank George
Monoid
Artwork unavailable
Ralph Carrigan
Monoid
Artwork unavailable
John Caesar
Monoid
Roy Skelton
Monoid Voice
Artwork unavailable
John Halstead
Monoid Voice
Artwork unavailable
Terence Woodfeld
Maharis
Artwork unavailable
Brian Wright
Dassuk
Eileen Helsby
Venussa
Terence Bayler
Yendom
Artwork unavailable
Richard Beale
Refusian Voice