Locus

He didn't socialize. He rarely spoke. None of his targets ever saw his face. Thus the enigmatic freelance military contractor known only by the codename of "Locus" encouraged fearful speculation about his past and origins, which sprang up in the absence of facts. Some said he was a rogue operative, yet another aberrant government supersoldier seeking freedom from the UNSC. Others claimed he was the renegade product of experiments who had discarded the ideals of independence for the promise of money. The truth, buried beneath a mountain of falsehoods, was largely irrelevant when compared to the ruthless efficiency with which Locus carried out the missions he was hired for.