Series Cast 13

1. 

   Christine Finn

   Tin-Tin Kyrano (voice) (32 Episodes), Tin-Tin Kyrano (26 Episodes), — (7 Episodes)

2. 

   Ray Barrett

   John Tracy (32 Episodes), — (23 Episodes), Atom Sub Reefer Captain / TV Reporter (voice) (1 Episode), Dr. Orchard (voice) (1 Episode), Jansen (voice) (1 Episode), Colonel Harris / Colonel Benson (voice) (1 Episode)

3. 

   Peter Dyneley

   Jeff Tracy (32 Episodes), — (22 Episodes)

4. 

   Sylvia Anderson

   Lady Penelope Clayton Ward (32 Episodes), — (16 Episodes)

5. 

   Matt Zimmerman

   Alan Tracy (voice) (32 Episodes), — (1 Episode), TV Reporter (voice) (1 Episode), Banino / Macklin / Foreign Lieutenant (voice) (1 Episode), Atom Sub Reefer Lieutenant (voice) (1 Episode), Hector McGill (voice) (1 Episode), Press Officer / 2nd Reporter (voice) (1 Episode), Lieutenant Jensen (voice) (1 Episode), Franklin / Gutierrez (voice) (1 Episode)

6. 

   Shane Rimmer

   Scott Tracy (32 Episodes), — (6 Episodes), Reactor Control Assistant (voice) (1 Episode)

7. 

   David Graham

   Gordon Tracy / Brains (voice) (32 Episodes), — (1 Episode)

8. 

   David Holliday

   Virgil Tracy (voice) (32 Episodes)

9. Paul Maxwell

   Captain Paul Travers (26 Episodes), — (1 Episode)

10. 

    Alexander Davion

    Space Captain Greg Martin (26 Episodes)

11. 

    Jeremy Wilkin

    — (6 Episodes)

12. John Tate

    Solarnaut Camp (voice) (uncredited) (1 Episode), Various Characters (voice) (uncredited) (1 Episode), Blackmer (voice) (uncredited) (1 Episode), Maxie / Scheiler / Foreign Colonel (voice) (uncredited) (1 Episode), Frank Hooper / Sir Harry (voice) (uncredited) (1 Episode), McColl / Security Guard (voice) (uncredited) (1 Episode)

13. 

    Charles Tingwell

    — (3 Episodes)

Series Crew 14