The Vylae are a space-faring race with a large computer network. Some of their traders were known to do business with the Nar.
Following the destruction of Tau Ceti by the Pfhor in 2794, the AI Leela was stolen from a Pfhor ship enroute to the homeworld, the victim of Nar privateering. Believeing the AI to be nothing but junk, the Nar captain sold her to the Vylae. When they reactivated her, her sudden growth through their 15-world computer network caused her to experience Rampancy. Eventually, the Vylae gave up trying to remove her.