| “ | The Mantle of Responsibility shelters all. But only the Created are its masters. | „ |
| ~ Cortana |
Cortana is a smart artificial construct and the main antagonist of the Halo Reclaimer Saga.
Cortana is voiced by Jen Taylor.
History
Original Trilogy
In the original Halo trilogy, Cortana serves as a principle protagonist whose role increases dramatically. In the Halo universe, she is instrumental in preventing the Halo installations from being fired, which would have wiped out most life in the galaxy.
Reclaimer Saga
In Halo 4, she experiences rampancy, causing her to become unstable and volatile until her apparent death. Resurrected in Halo 5: Guardians, Cortana ascends to a higher plain of reality and becomes the most powerful being in the galaxy. In the Halo universe, she is instrumental in preventing the Halo installations from being fired, which would have wiped out most life in the galaxy. In Halo 4, Cortana begins showing strange signs and behavior which is occurring as she has operated far past her predicted and designed seven year lifespan. Cortana's rampancy hampers the mission at times, but Cortana aids the Master Chief one last time in stopping the Didact and saving the Earth. Though most of Cortana is destroyed with the Didact's ship, Cortana is able to use the last of her power to shield the Master Chief from a nuclear blast with a hardlight bubble. Finally, Cortana says a final goodbye to the Master Chief.
