Halo

• 
  Pablo Schreiber
  Master Chief
• 
  Shabana Azmi
  Admiral Margaret Parangosky
• 
  Natasha Culzac
  Riz-028
• 
  Olive Gray
  Dr. Miranda Keyes
• 
  Yerin Ha
  Kwan Ha
• 
  Natascha McElhone
  Dr. Catherine Halsey
• 
  Bentley Kalu
  Vannak-134
• 
  Kate Kennedy
  Kai-125
• 
  Charlie Murphy
  Makee
• 
  Danny Sapani
  Captain Jacob Keyes
• 
  Jen Taylor
  Cortana
• 
  Bokeem Woodbine
  Soren-066
• 
  Fiona O'Shaughnessy
  Laera
• 
  Tylan Bailey
  Kessler
• 
  Joseph Morgan
  James Ackerson
• 
  Christina Bennington
  Cortana
• 
  Cristina Rodlo
  Talia Perez
• 
  Ryan McParland
  Adun
• 
  Viktor Åkerblom
  The Arbiter
• 
  Casper Knopf
  Young John
• 
  Burn Gorman
  Vinsher Grath
• 
  Duncan Pow
  John's Father
• 
  Hans Peterson
  Ops Tech
• 
  Julian Bleach
  Mercy
• 
  Jamie Beamish
  Kaidon
• 
  Olwen Fouéré
  The Mother
• 
  Sarah Ridgeway
  John's Mother
• 
  Karl Johnson
  Truth
• 
  Hilton McRae
  Regret
• 
  Claudius Peters
  MP Malya
• 
  Marvin 'Krondon' Jones III
  Louis-036
• 
  Dani Klupsch
  Lt. Mullins
• 
  Anna Koval
  Captain Briggs
• 
  Ailsa Davidson
  Tech Smith
• 
  Tom Gaskin
  Tech Jones
• 
  Gábor Nagypál
  Squirrel
• 
  Anna Trokán
  Trokan
• 
  Christian Ochoa
  Danilo
• 
  Juliette Motamed
  Carina
• 
  Ivanno Jeremiah
  Antares

• Otto Bathurst
• Jonathan Liebesman
• Roel Reiné
• Dennie Gordon
• Debs Paterson
• Craig Zisk
• Jessica Lowrey

• Steven Kane
  ...
  (developed for television by)
• Kyle Killen
  ...
  (developed for television by)
• Basil Lee Kreimendahl
  ...
  (staff writer)
• Justine Juel Gillmer
• Ahmadu Garba
• David Wiener
• Silka Luisa
• Richard Robbins
• Tom Hemmings
• Sarah McCarron
• Marisha Mukerjee