Series Cast 18

1. 

   Pablo Schreiber

   Master Chief, Spartan-117 / John-117 (8 Episoder)

2. 

   Natascha McElhone

   Dr. Catherine Halsey (8 Episoder)

3. 

   Joseph Morgan

   James Ackerson (8 Episoder)

4. 

   Shabana Azmi

   Margaret Parangosky (8 Episoder)

5. 

   Christina Bennington

   Cortana (8 Episoder)

6. 

   Natasha Culzac

   Riz-028 (8 Episoder)

7. 

   Olive Gray

   Dr. Miranda Keyes (8 Episoder)

8. 

   Yerin Ha

   Kwan Ha (8 Episoder)

9. 

   Bentley Kalu

   Vannak-134 (8 Episoder)

10. 

    Kate Kennedy

    Kai-125 (8 Episoder)

11. 

    Charlie Murphy

    Makee (8 Episoder)

12. 

    Fiona O'Shaughnessy

    Laera (8 Episoder)

13. 

    Cristina Rodlo

    Corporal Talia Perez (8 Episoder)

14. 

    Danny Sapani

    Jacob Keyes (8 Episoder)

15. 

    Jen Taylor

    Cortana (voice) (8 Episoder)

16. 

    Viktor Åkerblom

    Arbiter Var 'Gatanai (8 Episoder)

17. 

    Tylan Bailey

    Kessler (8 Episoder)

18. 

    Bokeem Woodbine

    Soren-066 (8 Episoder)

Series Crew 26