From Halopedia, the Halo wiki
This unidentified AI was a non-volitional artificial intelligence construct, created for the purpose of determining vulnerabilities of MJOLNIR armor per STOLEN GAUNTLET, a red alert failsafe in the event that any Spartan asset were to operate subversively outside mission parameters and operations protocol.
In 2558, this AI was tasked by Spartan Jameson Locke to search for vulnerabilities of MJOLNIR armor. After the AI discovered some, it was then ordered to enter the archives of Doctor Catherine Halsey, which were defended by Jerrod, the first experimental "micro" artificial intelligence. After solving some puzzles Jerrod gave it, the AI gained entry into the archives, which ultimately led the AI to several Forerunner signals that were early signs of Guardians preparing to wake.
This AI served as the canonical basis for the teams competing in Hunt the Signal.
List of appearances