Ana-B024 is an active member of Spartan Operations, and one of the few surviving members of the Spartan-III Beta Company. For most of her service, Ana-B024 worked as a Headhunter, the most elite Spartans to come out of the Spartan-III Program. As a Headhunter, Ana-B024 fought behind Covenant lines, sabotaging Covenant refueling outposts, long-range reconnaissance and collection of data on high-level Covenant and Insurrectionist targets, as well as the elimination of targets.