A fictional character, Joe is a black man, ostensibly one of Crixus' followers but in fact working for the secret white supremacy group, Kuklos. Crixus, who wants narrator Sir Harry Flashman to join up with Brown in order to start a civil war, assigns Joe to follow him everywhere. Joe, however, helps Flashy escape from Crixus' house and arranges for him to be picked up by Annette Mandeville and delivered to a hotel where three hooded members of Kuklos await. Joe, it turns out, is born a slave in the household of Count Charles La Force, whose Kuklos code name is Atropos. They are boyhood friends and Joe is now his bodyguard and spy inside the Underground Railroad, having appeared to run away five years earlier and become one of the most trusted "conductors." Atropos assigns Joe to accompany Flashy and Annette, posing as newlyweds, to New York City and on to Concord, MA, to enlist in Brown's service.