The Windrunner was an airship that belonged to Dooku, the Count of Serenno. During the invasion of Serenno, Count Ramil was in command of the Windrunner. Dooku allowed the droids to take him to face Ramil aboard the airship, where he killed the Count and disabled his army. Afterwards, Jenza accessed Windrunners security feeds and saw the battle for herself.
When Dooku tasked Asajj Ventress with finding his disappeared sister, he insisted Ventress take the Windrunner to the Carannia Spaceport, giving her the opportunity to review old personal holos while seeing Serenno from above. When the Windrunner arrived at the spaceport, Ventress left it there without landing it. Following the assassination of Jenza by Ventress' hand, Dooku took command of the Windrunner and returned it home.
Its hull was carved from burnished wood, and its portholes were so clear that it looked as if there were no glass in the frames. Because it did not have any boosters or repulsors, the airship was almost completely silent, at least until it sounded its guns. The Count's private cabin featured dark wood-paneled walls lined with holos of various natural landscape, a wooden desk ornamented with carved dragons on its side, several book shelves, and a cabinet filled with bottles and decanters.
The Windrunner in the Star Wars Legends continuity
The Windrunner first appeared in the current Star Wars canon in the 2019 audiobook Dooku: Jedi Lost, written by Cavan Scott. In the Star Wars Legends continuity, the Windrunner first appeared in the second issue of the Hard Targets story arc in the comic series Star Wars: Agent of the Empire, written by John Ostrander.