Biivren was an Imperial-aligned industrial world that was located within the Expansion Region of the galaxy. Large corporations took over the planet, leaving many of its natives homeless. A swoop gang known as the Blood Razors, led by Shirro, helped these unfortunates through the black market, which they hid from the Empire by organizing swoop chases. After the Battle of Endor, the Empire abandoned the planet, but engaged in a "poison well" policy, whereupon departing Imperial forces contaminated the world and undermined several of the corporations based there.