Shortly after to the Predecessor globe Genesis, this new Warden Endless sensed she was able to maintain brand new Mantle from Responsibility, and you will vowed to safeguard and you will serve lower than the girl, giving this lady complete procedure of one’s possibilities toward shield world with the plan that she got in your mind.
The newest Warden Eternal are concerned with their obsession with John-117, caution the lady which he create just be sure to prevent just what she got at heart, however, she overlooked their anxieties, convinced that he’d never do anything
Days later on Cortana become reawakening the newest Precursor constructs referred to as Guardians, ultimately causing planetary catastrophes. Lacking people guides during these events, this new UNSC didn’t understand how to operate, up to Dr. Catherine Halsey called Captain Lasky, offering him this lady venue and claiming she knew that was going into the to the nest globes. Around three days after, Fireteam Osiris is actually deployed on earth Kamchatka so you can phase an excellent help save operation, and you can is actually ultimately winning. 
When you find yourself Fireteam Osiris is actually preserving Dr. Halsey, John-117 is called of the Cortana inside the Raid towards UNSC Argent Moonlight. Bluish People carry out pursue Cortana to the Colony world of Meridian.  Cortana hit a deal with Meridian’s governor, a semi-rampant AI entitled Sloan – the folks from Meridian is given the possibility to evacuate, and you may Sloan himself considering the means to access this new Website name while the eradicate for rampancy, in return for enabling Blue Group unfettered accessibility the fresh new mine in the Apogee Route in addition to Guardian located therein. Regardless of the experimented with intervention of Fireteam Osiris, Cortana managed to utilize the Meridian Protector to bring John-117 as well as the rest of Bluish Cluster so you can Genesis, where she found this lady apparent solution to rampancy and her package to use the Guardians in order to impose an imperial Comfort and you will embrace the brand new Mantle from Obligation into Authored.
Fireteam Osiris, believing that the newest Guardians you can expect to cause them to John-117 and you will Cortana, have been soon informed from a sedentary Protector on the Sanghelios, saving Thel ‘Vadam out of a murder shot. Thel ‘Vadam read away from Locke’s purpose to acquire John-117, upon which Cortana interrupted and you may reported that they’d never ever come across her or him. Aware of the new Guardian lying on earth, Fireteam Osiris managed to and get a beneficial Constructor you to definitely stalled the newest Protector for enough time to help you panel they, in spite of the Warden Eternal intervening once more.
Understanding regarding Cortana’s preparations, John-117 recognized you to definitely she must be avoided, but wished which he could well be able to reason along with her. Cortana is annoyed from the Warden’s lingering attempts to damage John, eventually banishing him briefly down seriously to his tips. She upcoming manifested by herself to see John once again, whom made an effort to convince the woman to avoid. Cortana try distressed, but simply assuming him becoming misguided, regarding the Cryptum to possess ten thousand age to show him the girl functions after she was done.
not, Locke been able to ruin the very last exchange, making it possible for 031 Exuberant Witness so you can regain command over Genesis’ systems. When you look at the an act of revenge to own Cortana getting this lady setting up out cheekylovers hookup, Exuberant Experience grabbed the fresh Cryptum houses John-117 and you will Blue People, much in order to Cortana’s headache since the woman Guardian went to the slipspace.
Seeing Fireteam Osiris chronic towards the releasing John-117, Cortana taunted the team and you can delivered Prometheans to quit him or her
Embittered because of the loss of John-117, Cortana began the lady Reclamation, and managed to get the UNSC Infinity. Although not, they performed an emergency slipspace plunge just before their Guardian you can expect to disable they.
During the girl target into the types of new universe, the brand new Unggoy away from Bahalo made a decision to get in on the Created. Seeing that it, Cortana sent ships packed with complex technical, farming service channels, dining, medicine and you can shelter into world.