Cortana

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First Appearance: Halo: Combat EvolvedVoice Actress: Jen TaylorHeight: UnknownHair Color: Purplish-BlueEye Color: Purplish-BlueOverviewCortana is a UNSC Artificial Intelligence construct that made her video game debut in Halo: Combat Evolved. Serving alongside the Master Chief for much of the Halo series, Cortana is portrayed as a flash-cloned copy of Dr. Catherine Halsey’s brain, and sh... read more

A fictional artificially intelligent character in the Halo video game series. Voiced by Jen Taylor, she appears in Halo: Combat Evolved and its sequels, Halo 2, Halo 3, Halo 4, Halo 5: Guardians and Halo Infinite. She also briefly appears in the prequel Halo: Reach, as well as in several of the franchise's novels, comics, and merchandise. During gameplay, Cortana provides backstory and tactical information to the player, who often assumes the role of Master Chief Petty Officer John-117. In the story, she is instrumental in preventing the activation of the Halo installations, which would have destroyed all sentient life in the galaxy.

Cortana's original design was based on the Egyptian queen Nefertiti; the character's holographic representation always takes the form of a woman. Game developer Bungie first introduced Cortana—and Halo—through the Cortana Letters, emails sent during Combat Evolved's production in 1999.

The relationship between Cortana and Master Chief has been highlighted by reviewers as one of the most important parts of the Halo games' story. Cortana has been recognized for her believability and character depth, as well as her sex appeal. The character was the inspiration for Microsoft's intelligent personal assistant of the same name.

She also appears in the Halo television series, created by Dr. Halsey as a means of keeping Master Chief and other Spartans in line. By cloning herself and then copying her clone's brain patterns (which also kills her), Halsey is able to bring Cortana to life and then implant her directly into Master Chief's neural pathways.