The Doctor
Jo Grant
The Master
President of Earth
General Williams
Draconian Prince
Draconian First Secretary (uncredited)
Cell guard (uncredited)
Gardiner
Kemp
Hardy
Stewart
Newscaster
Draconian space pilot
Secretary
Professor Dale
Patel
Prison Governor
Cross
Sheila
Technician
Draconian captain
Draconian Emperor
Draconian messenger
Earth cruiser captain
First Ogron
Second Ogron
Third Ogron
Congressman Brook
Dalek (voice)
Pilot
Lunar guard