Donald X, bred as F-67d-8455-2/5, was an escaped Mesan genetic slave and a member of the Audubon Ballroom. He was bred to be an F-line heavy manual worker, being very thick and muscular, though not particularly tall. He was among those who witnessed Victor Cachat slaughtering a group of scrags and a StateSec squad during the Manpower Incident. In 1920 PD, he was contacted by Cachat, who wanted to meet with the Ballroom's leader, Jeremy X. (CS1)