The ship known as the Wroshyr, shaped like a saucer, was the vessel utilized by Chenlambec, a Wookiee bounty hunter, during the era of the Galactic Civil War. He chose this name as a tribute to the Wroshyr trees found on his native planet, Kashyyyk.
In the year 3 ABY, not long after the Battle of Hoth, Chenlambec, accompanied by his bounty hunting apprentice Tinian I'att, boarded the Executor, which served as the personal flagship of Darth Vader. This action was part of a complicated scheme to capture the Trandoshan hunter Bossk. The Wroshyr and its crew arrived at the Executor after the initial screening, so Vader would not scrutinize them, because their true objective was not to pursue the Imperial bounty on the passengers of the Millennium Falcon. It remains unclear whether Vader's screening crew had cleared them for the job before, as they had rejected other hunters.
Chenlambec and I'att entered into an agreement with Bossk, with the secret intention of luring him away from Han Solo and Chewbacca. This required them to participate in their charade aboard Bossk's own ship, the Hound's Tooth, which meant abandoning the Wroshyr while it was docked in one of the Executor's hangar bays. Although they were required to pay daily Imperial docking fees, Chenlambec never returned to reclaim his ship. After successfully capturing Bossk and claiming the Imperial reward, the two hunters seized his ship for their own use.
The Wroshyr remained on the Executor.