This article contains spoilers for Halo episode 8.
Halo episode 8 has revealed the real reason Dr. Halsey created the Spartan project. Like the celebrated first-person shooter on which it is based, Paramount+'s Halo TV series is set in a galaxy where the human race is under relentless attack by an alien Covenant. The Master Chief and the Spartans are humanity's only real defense against this onslaught.
The TV series doesn't just draw upon the games, though; it has absorbed a lot of material from Halo's wider universe, lore established in novels and tie-in comics. In Halo, the Spartans weren't originally created to deal with the threat of the Covenant; rather, Dr. Catherine Halsey's Spartan project was supposed to create supersoldiers who would fight to quell a rising Insurrectionist movement that saw colonies attempt to break free of Earth's grip. This gives a much darker, imperial edge to the Spartans, and as Halo season 1 has continued it has revealed an ever-darker side to the whole project. Dr. Halsey kidnapped the Spartans when they were just children; she trained them as child soldiers, and then performed horrific genetic and cybernetic experiments upon them to turn them into walking weapons. Spartans are kept under control using drugs to quash their emotions, and Halsey went one step further by pursuing the Cortana program — creating a smart AI she intended to overwhelm John-117's mind and remove all individuality.
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Halo episode 8 shines a subtle light on Dr. Halsey's true motive when she created the Spartans, however. In one key moment, Cortana tells Dr. Halsey the Master Chief's new relationship with Makee means he is no longer alone; Halsey
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