Characters played by Tom Baker
The Doctor
Characters played by Lalla Ward
Romana
Characters played by Christopher Neame
Skagra
Characters played by Daniel Hill
Chris Parsons
Characters played by Denis Carey
Professor Chronotis
Characters played by Victoria Burgoyne
Clare Keightley
Characters played by David Brierly
K9
Characters played by Gerald Campion
Wilkin
Characters played by Shirley Dixon
The Ship
Characters played by Derek Pollitt
Caldera
Characters played by James Coombes
The Krargs
Characters played by John Hallet
Police Constable
Characters played by David Strong
Man in Car
Characters played by James Muir
Fisherman
Characters played by Derek Suthern
Krarg
Characters played by Barnaby Edwards
Krarg
Characters played by Tim Bentinck
The Doctor - Body Double
Characters played by Toby Hadoke
Continuity Announcer
Characters played by Graham Cole
Scientist
Characters played by Mark Strickson
Turlough
Characters played by Mary Tamm
Romana