Conservatist

"My directive is preservation (protection), conservation (refinement) and replication (replacement)." - Conservatist, Transmission 001
Conservatist was a Forerunner Lifeworker artificial intelligence that was created in the later years of the Forerunner-Flood war. Originally created to facilitate the analysis and encryption of genetic code, the firing of the Halo Array would leave the AI without occupation for thousands of years, leading it to onset rampancy.
== Biography ==
The Forerunner ancilla known as Conservatist was constructed in order to aid Forerunner Lifeworkers in their on going efforts to preserve the species of the galaxy in lieu of the Flood event.
Most directly, Conservatist's intended job, was to perform deep complex analysis on genetic code; and then to correct any malformations that may harm the longevity of the species. Once the code was observed and corrected, the AI mind could then use a machine known as The Replicator to reproduce the species it was analyzing.
However, the Forerunner-Flood war reached it's climax shortly after the completion and installment of the mind and machine on the Delta Halo. The Halo Array was fired and all life in the galaxy was eradicated.
With no DNA to observe, the mind began to internally analyze itself. Thousands of years of internal debate drove the mind Rampant.
It was during bouts of rampancy, Conservatist declared that it's true task was not just the replication of DNA, but the improvement and replacement of it. The mind resolve itself on it's new task, which it labeled "The Conclusive Directive". It would erase all the current beings of the galaxy and replace them with superior new versions.
Sometime in the years 2553-2558 AD, the mind was contacted by a UNSC research team. After a brief period of sharing transmissions with the humans, the mind utilized the Replicator to produce it's own genetic strain of humans, and used them to annihilate the UNSC researchers.
The mind then turned it's sights on using it's newly acquired human productions to seize more genetic code from the galaxy, and after it was content with what it had obtained, it would use the Halo array to eradicate all the current being of the galaxy.
In a rapid retaliation, the UNSC deployed a Spartan fireteam onto the island that housed the mind and the machine. The fireteam was successful in taking advantage of key exploits in the memory systems of the forerunner devices, destroying several key elements of the Replicator and ultimately, overloading Conservatist with information, destroying it's mind internally.