Temporadas normales 4

1. 

   Jon Pertwee

   The Doctor

2. 

   Katy Manning

   Jo Grant

3. 

   Richard Franklin

   Captain Mike Yates

4. 

   John Levene

   Sgt. Benton

Estrellas invitadas 12

1. 

   Roger Delgado

   The Master

2. Nicholas Pennell

   Winton

3. John Ringham

   Ashe

4. 

   Helen Worth

   Mary Ashe

5. 

   Bernard Kay

   Caldwell

6. 

   Morris Perry

   Dent

7. 

   Tony Caunter

   Morgan

8. Norman Atkyns

   Guardian

9. 

   Pat Gorman

   Primitive

10. Roy Heymann

    Alien Priest

11. 

    Nicholas Courtney

    Brig. Lethbridge-Stewart

12. Terry Walsh

    IMC Guard Rogers (uncredited)

Equipo 9