Saren

The Saren are a non-Federation race of traders who have apparently elected to ply their trade on the fringes of the Alpha and Beta Quadrants. Their Trading Corps made contact with Vemla sometime in the 21st century, where they offered the Vemlans highly advanced technology and equipment, including an automated factory capable of creating positronic microprocessors, which the Vemlans used to create androids. This sparked a golden age for the Vemlans, who up until that point had been locked in war with one another. But the Vemlans soon became overly dependent upon android labor, which ultimately resulted in the androids becoming more sophisticated, until they became aware of how much they were being exploited, and thus revolted against their masters. (TNG novel: Spartacus)