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> > > Interesting thought. I kinda like this idea because it could explain why the Warden Eternal was such a bland character in H5. He was just playing along and going through the motions, waiting for his time to strike. Though I would prefer it if the Cortana from H5 was a corrupted fragment and not the real Cortana.
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> > > Another thought I’ve had about Cortana is: what if the “Cortana” we see in H5 isn’t Cortana at all? What if it’s the Gravemind manipulating precursor technology to make everyone think that Cortana has gone rogue, when in reality she really is dead and hasn’t been around since H4. We saw the Gravemind use Cortana’s likeness in H3 to manipulate and torment the Chief, so it’s not much of a stretch for the Gravemind to pull a similar stunt going forward. I mean she looks so different and acts so different. Her syntax and speech is completely different too. It would be cool imo for all of H5 to have been a single move on a giant chessboard between the Gravemind and the rest of the galaxy.
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> > > The Gravemind even says in H3 that he cannot be defeated, only stalled: “Resignation is my virtue. Like water, I ebb and flow. Defeat is but the addition of time to a sentence I never deserved… but you imposed.” Perhaps the stalling action is over and the Gravemind is ready to jump back into the seemingly infinite fight over control of the galaxy.
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> > To give my 2 cents on this response. All of these theories are very interesting that you put forward however, firstly it is practically confirmed that Cortana has the logic plague and so in the “endgame” of Halo, they’ll be rounding of the Reclaimer Saga which usually means someone has to die, so I think a good character that 343i has set up to die is Cortana.
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> > Secondly, to discuss your Gravemind point, I think it is possible but there was no proto-Gravemind or any form of co-ordination of the flood as there was no outbreak or anything so she couldn’t of been controlled by a Gravemind directly, so instead it’s the Logic Plague that is the reason for her behaviour.
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> > Lastly, to give recognition for a thing you pointed out, her speech and her wording is a lot like the Gravemind as well as other villainous characters. For example we see her use phrases that the Gravemind said but I can’t think of any at the top of my head. We see her use a phrase from the Didact’s epilogue in Halo 4 except changing parts to fit the Created holding the Mantle. Last reference is 343 Guilty sparks hums that he does throughout CE and 3 at random intervals is repeated at the end of H5’s Legendary Ending with Cortana and the ring which people believe to be Installation 09 which is possible but I think it is Installation 07 instead because that’s where the next game is more than likely gonna be set from the evidence in the game announcement trailer.
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> The logic plague would be an interesting route to take, and you are correct that it has been very heavily suggested in various extended lore material, but it really hasn’t been confirmed at this point as far as I know (though I really hope this is the case). But to take that idea and run with it if I may, I think that Cortana being infected with the logic plague could be the Gravemind’s long game. The logic plague could act as a sort of insurance policy for the Gravemind, ensuring that the Flood could return after its defeat at the end of H3. Then, in the same way Mendicant Bias was turned on its masters, Cortana has been turned on hers. Then once Cortana has fully subjugated the galaxy, leaving room for the Flood to return, the Gravemind could be rebuilt and brought forth to wreak havoc on the galaxy again, like the Flood appeared to try and fail to do during Awakening the Nightmare.
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> Either way, there’s so much potential for a fantastic story in Infinite relating to the Flood, so I’m really rooting for their return.
Your story is how I’ve mostly pictured Infinite going, but I believe that when Cortana reveals that she is on the side of the flood, her AIs turn against her, believing that what Cortana is doing is wrong. I always thought of that as an interesting twist in the plot and one that makes sense too. This also makes it easier for 343 to write what happens to the AIs after Infinite (as if they were on the side of Cortana mass killing of the AIs seems a bit out of place for a Halo game). I can’t think for myself what they would do after the fight with the flood and Cortana.
After writing all this, it may not end up being the story, but like you I hope it is. It would be a suiting end to the Reclaimer Saga and for Chief himself, I hope with Chief he is just adrift in space again, somehow, like after Halo 3, then he just goes into cryosleep, without dropping a beacon so he cannot be found easily as he needs a good rest after finishing the fight… again. After Halo 3, I thought that was a good ending as I didn’t want to see Chief die, but at the same time I didn’t want Chief to retire, so I think him disappearing at the end of Infinite would be best.