Halo Alpha
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Halo Alpha

A civilian consultant (#409871) with Civilian Identification Number 10141-026-SRB4695. She, a biological scientist, had an M.D. and Ph.D.

Biography

The SPARTAN-II Project

Dr. Catherine Halsey was the person responsible for both the SPARTAN-II project, and the MJOLNIR project. She, along with Captain Jacob Keyes (who at the time was a Lieutenant), handpicked the first candidates for the Spartan program, and brought them to Reach.

On Reach, she trained the Spartans along with Chief Petty Officer Mendez and the AI Deja. She looked over their augmentation procedures, combat training, education and studied the effects of the Spartan lifestyle on the children. She kept in close contact with them all throughout their lifetimes, from her base under Reach. Annoyingly to the Spartans, she was always able to tell them apart from each other, even under half a ton of MJOLNIR battle armor and always used their first names, never their ranks or serial numbers.

Fall of Reach

After the Covenant's invasion of Reach, she volunteered to remain at ONI's CASTLE Base to destroy all the data that ONI had left behind. But fortunately, surviving Spartan soldiers found her and they were able to escape with the Forerunner Crystal ONI had been protecting.

Escape into the Unknown

She later saw the importance of destroying this artifact, for it was too dangerous and uncontrolable to use. After escaping Reach, she stole a small spacecraft and, along with Kelly-087 sedated, went into slipspace. Her whereabouts were unknown until the events of Ghosts of Onyx.

The Dr. returns

In Ghosts of Onyx, Halsey and Kelly eventually make it to Onyx, while reuniting with Chief Petty Officer Mendez and eventually her remaining SPARTAN-II soldiers. She helps decipher the mystery of the planet.

Halsey's Guilt

Halsey carried extraordinary guilt because of the SPARTAN-II project, and she felt that she had exploited the children and destroyed their lives. Though she continued to support them and gain monumental prestige for her efforts, she also felt responsible for each one who died. She never could quite justify their exploitation as a "necessary sacrifice". This likely accounts for her actions in abducting Spartan-087.


Appearances

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