This article lists the various minor fictional characters who appear in A World of Difference. These characters play at best a peripheral role in the novel. Most were simply mentioned or had a very brief, unimportant speaking role that impacted the plot minimally, if at all, and never appeared again. Some were never even given a name.
Carleen was a historian of the Roman Empire, and the first wife of Emmett Bragg. Although Emmett loved Carleen, their marriage was not compatible with his dreams of leaving Earth for Minerva. He later married Louise, 15 years his junior, who accompanied him on the pioneering voyage to the other planet.
Gurtz was a son of Reatur. Left by his brother Ternat in charge of the storage sheds containing farming tools, Gurtz left the tools in disarray on the floor, proving himself a fool incapable of such a simple task.
Mountenc was a Minervan of the Great Clan Skarmer and of Hogram's domain. In 1984, he purchased a Soviet-made flashlight from Fralk and was furious that it stopped working after a mere four nights. Fralk appeased Mountenc by obtaining replacement batteries from the Tsiolkovsky. 
Nogdar was a Minervan male of the Skarmer domain. He was assigned to guard the captive Russian cosmonaut Oleg Lopatin, who had attempted to defect from Skarmer service. Nogdar tripped on a stunbush, and Lopatin broke free.