Hard Science Fiction or Space Opera, Cyberpunk or post-nuclear, this is the realm of Science Fiction.
The Role Playing Game Workshop: Read. Post. Play."/>
In cultures and langauges with very few acceptable personal and family names, nicknames will be used. These nicknames will be based on their physical traits and personalities. So instead of five Ryon Khans, you have Big Ryon, Little Ryon, Fast Ryon, Ryon the Priest, and Ryon with coin. It will make finding people, for an outsider, difficult.