Sith Shadows

The Sith Shadows were a group of thugs rather than actual Sith who were known to attack Force-sensitives during the time of the Galactic Civil War. They were generally seen on the planet Dathomir, near the village of Aurilia though were reported to have been seen on other planets also. Though the Sith Shadows were known to have many species in their organization, a Wookiee was never known to have been seen.