Why did Cortana turn evil?

For those not in the know, Cortana is well past the age an AI should be, and she now suffers from Rampancy, which has essentially turned her evil.
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Why did they turn Cortana evil?

“While on the verge of rampancy, sacrificed herself in order to ensure the Forerunners defeat.” “Cortana - the very same human AI that stopped the Didact - was consumed by the Domain while in the throes of rampancy. These factors led her to seize the Mantle of Responsibility for herself.”
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Is Cortana the villain in Halo Infinite?

Initially appearing as the deuteragonist of both the original Halo trilogy and Halo 4, she returns as the main antagonist of the Reclaimer Saga, serving as the main antagonist of Halo 5: Guardians, the unseen overarching antagonist of Halo Wars 2 and the posthumous overarching antagonist of Halo Infinite.
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Why did Cortana go rampant?

He became fully rampant after PSI Loki fragmented Sif, whom he loved. After the Tiara was balanced and Johnson escaped, a Covenant Warship began glassing the planet. An ONI Prowler recorded his last transmission, which hinted strongly at his rampancy.
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What is Cortana trying to do in Halo 5?

Cortana In Halo 5

She would take control of the galaxy using a vast Forerunner army, gigantic Guardian robots, rallying like-minded AI constructs to her cause, and spreading her warped vision of unity throughout the galaxy with an iron fist.
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Cortana Betrays Master Chief in HALO 5 VS Why She Betrayed Him in HALO Infinite



Which Halo does Cortana betray?

AIs like Cortana are supposed to be deactivated after seven years to prevent rampancy. Cortana begins to lose control toward the end of Halo 4, and ultimately sacrifices herself for Chief. But a fragment of her is resurrected and rises to power in Halo 5: Guardians.
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Why is Cortana purple?

Bungie said Cortana was purple when she was young, they show her as purple in Halo Reach and Halo CE. Then 343 made Halo CE anniversary and decide to represent her in blue. Then 343 made her purple in Halo Infinite.
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Did Cortana cure her rampancy?

With the Gravemind infiltrating her system, Cortana began to show signs of rampancy; however, she was rescued by John-117 before the Flood could completely subdue her, and resumed her normal state shortly after her rescue.
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Why did Cortana choose Noble 6?

She choose Noble 6 to get to the PoA safely from Halsey's lab. Plus, Noble 6's armor couldn't carrier her like MC's hence he has the data thing attached to his back.
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Why did Roland not join Cortana?

Roland's compassion and sense of fairness may be why he did not turn to the Created during Cortana's uprising, despite hoping equal rights for AIs as beings.
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Is Cortana good or evil?

For those not in the know, Cortana is well past the age an AI should be, and she now suffers from Rampancy, which has essentially turned her evil. This new Cortana seems based on Dr. Halsey — just like the original — but it's the AI effectively in her infancy.
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Why is Cortana named Weapon?

In Halo Infinite, the Weapon does not have a name. It was implied that The Weapon wanted to name herself Cortana after asking the Master Chief if it's okay to do so. In the final scene inside the Pelican, after the pilot introduced himself as Fernando Esparza, the pilot asked what to call The Weapon.
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Why is Cortana in Zeta Halo?

Cortana wanted Zeta Halo, so she was present on it to maximize her chance of securing it. Her conversations with Atriox weren't so much her being trapped in a room as they were her not being willing to abandon the Halo to the Banished.
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Who is the main villain in Halo Infinite?

The Harbinger is the overarching antagonist of the Halo franchise's Reclaimer Saga, being the unseen overarching antagonist of Halo 4, Halo 5: Guardians, Halo Wars 2, Halo: Shadows of Reach, and Halo: Divine Wind; before making her first appearance as the main antagonist of Halo Infinite.
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Why did Master Chief go AWOL?

Master Chief Goes AWOL

After learning that Cortana is alive following the events of Halo 4, Master Chief leaves the UNSC (along with three members of his longtime canonical Spartan crew, Blue Team) in order to track her down and rescue her.
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Does Cortana have the logic plague?

We, the audience, already know that the logic plague (or something similar) is the only thing that explains Halo 5's Cortana. We thus also already know that Cortana 2, who does not have the logic plague, will not repeat Cortana 1's mistakes.
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Why is Cortana a clone?

Cortana was created using a flash cloned copy of Dr. Catherine Halsey's brain. Twenty flash cloned brains were created, but only two survived; one of the two survivors were used to create Cortana. The neural pathways of the cloned brain were scanned and copied through a process called Cognitive Impression Modeling.
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Who is the strongest Spartan in Halo?

Halo: Ranking The 12 Strongest Spartans (That Aren't Master Chief...
  • 8 Buck.
  • 7 Jerome-092.
  • 6 Kelly-087.
  • 5 Kurt-051.
  • 4 Frederic-104.
  • 3 Spartan-B312 (Noble 6)
  • 2 Linda-058.
  • 1 Samuel-034.
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Is Noble 6 related to Master Chief?

Noble Six is Master Chief's son and has a brother called The Rookie. And yes this IS possible even though Noble Sex died before halo 1.
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Is Cortana named after Halo?

The article is a good reminder of the fun origin story behind the assistant being branded as “Cortana” — the name was taken from the Halo character (who is also an AI, which isn't confusing at all) and was only supposed to be used during development.
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How old is Cortana?

4 Halo 4: Cortana (Age 8, AI Chip, Activated November 7) Master Chief might have been the one to fight the Covenant and Flood, but it was thanks to Cortana that each mission was successful.
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Is Cortana a Weapon?

"The Weapon" (AI Serial Number: CTN 0453-0) is the moniker of an artificial intelligence. She was created as an exact copy of the AI Cortana, designed to enter an installation to imitate Cortana and lock her down for retrieval.
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Does Cortana have a physical body?

Appearance. As Cortana is an AI, she has no physical body. She can communicate through comm systems and project a holographic image of herself from appropriate projectors, such as Holotanks.
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