Halo TV Show Changes Cortana's Origin & Purpose In 6 Major Ways
Warning: Contains spoilers for Halo episode 3!
Halo has changed Cortana's origin and purpose in six major ways. Introduced in 2001's Halo: Combat Evolved, Cortana was a sophisticated artificial intelligence who bonded with the Master Chief's Mjolnir armor. She served as his adviser throughout his missions against the Covenant, although in sequels Cortana sadly suffered rampancy, actually becoming an antagonist in her own right. The Halo TV series is, however, taking a very different approach to the original Halo timeline when it comes to Cortana — making her as much a threat from the beginning as an ally.
The first three episodes of Paramount+'s Halo TV series essentially serve as Cortana's origin story. The actual process is lifted straight from the lore of the original game universe, where Cortana was originally created using illegal flash-cloning of Spartan creator Dr. Catherine Halsey. Halsey then used a process called Cognitive Impression Modelling to create a scan of the flash-clone's brain; this fashions an artificial intelligence-based on the so-called "donor" brain, but unfortunately destroys the original.
Related: Halo Corrects A Cortana Line That Made No Sense In Combat Evolved
But, while the methods Dr. Halsey used to create Cortana may be surprisingly accurate to the show's source material, a lot of the details are very different. Paramount+'s Halo series has added greater depth to Cortana's backstory, giving her a sinister new role and abilities that seem to be subtly different to the original timeline. Here are all the major changes to Cortana's origin and purpose.
Smart AIs are extremely common in the main Halo timeline. It's not unusual to see major UNSC frigates manned by smart AIs, and many ran
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