Beldorian's rule only lasted a few years. At the onset of the Clone Wars, Supreme Chancellor Palpatine used special emergency powers to send political rivals into exile around the galaxy. One of these was Seti Ashgad, a charismatic hyperdrive designer with political aspirations. Seeing that Beldorian the Hutt had no real interest in ruling Nam Chorios -- as long as his desires were satisfied -- Ashgad seized control of the planet, becoming its unofficial ruler. But Ashgad soon realized that Beldorian had only been a figurehead for a more insidious figure, an evolved, humanoid droch that called itself Dzym.
About thirteen years after the Battle of Yavin, Luke Skywalker and Leia Organa Solo traveled to Nan Chorios to meet with Ashgad. While there Leia was taken prisoner and met Beldorian. Leia eventually escaped, and together with Luke uncovered Ashgad and Dzym's plan to unleash a plague throughout the sector. During the attempt to stop Ashgad, Leia was attacked by Beldorian. At nine meters, Beldorian was large even for a Hutt, and possessed none of the corpulent rolls that immobilized lazy Hutts like Jabba. The old Hutt was all muscle and fire, and attacked with his lightsaber with ashtonishing quickness. Although Leia had not been trained extensively in lightsaber combat, she did have combat training and a keen insight into the flow of the Force. A long swift side cut killed the Hutt.
info gathered from:
Star Wars: The Essential Chronology
The Planet of Twighlight Web Enhancement
