I should have mentioned Warmind Joy/Joyeuse is a bit of speculation based on some lore from Season 1 and some logical bias. More to come as I go back and find the relevant codex entries and lore.
Both Halo and Destiny have gone ahead and had their own versions of Joyeuse.
Destiny had a submind of Rasputin on Io.
Halo, faithful to some old idea about Cortana being made of the same steel as Durandal and Joyeuse, recently brought the weapon into the mythology with naming her Joyeuse.
Which are said to have been forged by angels and such. Real hardcore Catholic mythology and all that jazz.
King Charlemagne was the one that held Joyeuse.
Roland his knight, held Durandal (Excalibur in Arthurian legend - The Sword in the Stone)
Ogier the Dane held Curtana, the Sword of Mercy (one part of the 3 sword set that is one of the UK Royal Family jewels)
Her audio logs post colony collapse seem to imply that she is has been active long after the humans were gone.
She is also a bit rampant like Durandal.
Durandal was secretly programmed to become more than a doorman. Tycho was programmed to be something more than a Science and Engineering AI as we see with his own rampancy. Leela was programmed to be the Marathon Command and Operations AI, her story didn't end in M1 either. She may have been directly influenced by the S'pht attacking the Marathons networks via terminals.
Joy was programmed to be a Wellness and Community support AI. Yet she seems to have been corrupted now by the Anomaly too. Which leads us to question how much of the Strauss programmed rampancy and (in theory for now we will say) her role as a colony defense AI after the remaining Marathon crew had settled in and all come out of Cryo sleep. Perhaps several generations after the colonies founding.
Kinda weird but my late mothers name is Joyce, and my cat is named Cortana.
In the words of Leela.
Everything is not as it seems {} {} {}
Shoutout to
@Cultural_Yeast
Without your YouTube videos and the rabbithole about the 4th AI and the Cortana Letters, I never would have gotten half of this out of the games lore because there are so many layers to it.
We know who the 4th AI is now btw. It's Joy in new Marathon. It appears Strauss programmed her the same way as Durandal. She was supposed to become the colony defense AI for the entire Tau Ceti star system after they were all settled in. I am still putting that one together for now.
Ghost Virus YT>>>>
youtube.com/@Ghostvirus