Keerakh were the Vahki model assigned to Ko-Metru. They were known for their uncanny ability to predict where a target would run, allowing them to get there first. They were rarely seen by Ko-Matoran except for those who had broken the law and been apprehended. Keerakh carried staffs of confusion, which could scramble a target's sense of time and place and leave one disoriented.
One swipe of a Keerakh staff was enough to make a Matoran lose all sense of time and place, believing he or she was in a different place entirely. Keerakh were efficient trackers; they simply predicted where a target would go and arrived there first.
Keerakh's zone of control was Ko-Metru. They were equipped with Kanoka disks and the Staff of Confusion, which temporarily distorted a target's sense of time and place. They were masters of strategy and tactics. Their preferred tactic was to determine where a fleeing target was going and get there first.
Keerakh took the uncertainty out of pursuit. They were known for their uncanny ability to figure out where their target was going and to get there first. Keerakh Staffs of Confusion temporarily scrambled a Matoran's sense of time and place, making them so disoriented that the could not cause any more trouble. It was not unusual to see confused Ko-Matoran wandering through Ko-Metru, not sure where they were or what they were doing there.
Keerakh used their staffs to confuse Matoran so they wouldn't break laws.