Offensive Bias

Offensive Bias is a Contender-class Forerunner artificial intelligence that was created to counter the rampant AI Mendicant Bias. It commanded the last of the Forerunner's defenses at the Greater Ark and at the final battle of the Forerunners. While seemingly less creative and independent than Mendicant Bias, Offensive Bias was still capable of coordinating inconceivable numbers of ships, sentinels, personnel, as well as an original Halo and the systems of the Greater Ark simultaneously. More importantly, Offensive Bias was designed to be far more methodically lethal than Mendicant Bias.

Fall of the Forerunners and Firing of Halo
In the twilight hours of the Forerunner-Flood War, Offensive Bias was given charge of the last of the uninfected Forerunner ships and fleets.. Shortly thereafter, Offensive Bias apparently took command of the defense of the Greater Ark, the last large refuge of the Forerunners and many of their client species. It appears that the Forerunner accepted that only Offensive Bias was capable of matching Mendicant Bias's moves, as it were. As such, it was Offensive Bias who fired Omega Halo and then attempted to defend it against Mendicant Bias's Flood-crewed fleet, supported by star roads and other Precursor artifacts; it failed, which may have fed into Mendicant Bias's disdain towards him, having previously referred to Offensive as an "inferior metarch".

Despite this, Offensive Bias was able to transfer itself to the Lesser Ark and even extricated a small number of warships from the destruction at the Greater Ark. Before initializing the Halo's firing sequence with the IsoDidact, Offensive Bias announced that Flood forces were approaching the portal that led to the Lesser Ark; simultaneously, Mendicant Bias sent a coded message to Offensive stating that it would give no quarter and would destroy the Ark. Mendicant offered Offensive a chance to join it and survive; Offensive rejected the offer, informing the IsoDidact of this offer and confirming its freedom from the logic plague. Offensive Bias then assisted the IsoDidact in preparing the Ark and Halo Array; once the IsoDidact gave the order and the mechanisms were set running, Offensive Bias's attention shifted as it took the final Forerunner fleet to prevent Mendicant Bias from gaining access to the Lesser Ark.

Even though Mendicant Bias's fleet outnumbered Offensive Bias's by 436.6:1, Offensive Bias was designed specifically to effectively counter and exploit Mendicant's rampant actions. During the battle, Offensive Bias played for time, allowing Mendicant Bias's rage to cause him to act irrationally and take its time in destroying Offensive Bias's fleet. After about eight hours of combat, the Array was fired which, aside from killing all sentient life in the galaxy, disabled the majority of Mendicant's fleet which was crewed by the Flood and out of its direct control. After the Halos fired, the advantage turned towards Offensive Bias: it had planned for the Halo Effect, while Mendicant Bias had not, and all its vessels could be commanded by it directly, including ones previously captured by the Flood. Within two minutes, Mendicant Bias was outsmarted and defeated by Offensive Bias, who utilized the now-crewless ships with a ruthless, unconventional efficiency. Mendicant Bias's fleet was annihilated and the rogue ancilla itself captured. What happened to Offensive Bias after this success is not specified.

Terminal logs
What follows is a logged transcript of events that occurred during and amidst the battle, as logged by Offensive Bias itself.

List of appearances

 * Halo 3
 * Halo: Silentium