Alien mengancam keberadaan manusia dalam pertarungan epik abad ke-26.
Pablo Schreiber
Master Chief, Spartan-117 / John-117
Natascha McElhone
Dr. Catherine Halsey
Joseph Morgan
James Ackerson
Shabana Azmi
Margaret Parangosky
Christina Bennington
Cortana
Natasha Culzac
Riz-028
Olive Gray
Dr. Miranda Keyes
Yerin Ha
Kwan Ha
Bentley Kalu
Vannak-134
Kate Kennedy
Kai-125
Charlie Murphy
Makee
Fiona O'Shaughnessy
Laera
Cristina Rodlo
Corporal Talia Perez
Danny Sapani
Jacob Keyes
