The Lesh'v'rin were a large proeathan nation-state that ruled over parts of south-east Asia. They were often at odds with the Drell because of their proximity and often fought over resources and ideology. Proeathans of the Lesh'v'rin have a cultural dislike of Drell in general because the Drell were their more powerful neighbors that often bullied them on matters of land and resources.
Like many nation-states the Lesh'v'rin went into hibernation during the fall of their civilization. Adjetavs found their bunker and killed all but five members of their people. These proeathans lived out their natural lives in the presence of humans and if they interbred with the human population is unknown.
The Living Stars AI known as Mercury is a Lesh'v'rin by birth.