During the era of the Galactic Civil War, Tatooine was home to Woff B'tar, a Trandoshan who operated as a slavemaster on that planet.
In the year 1 ABY, B'tar functioned as a slavemaster on Tatooine. Among the slaves he held were Sadelli and [Soolami], two Twi'lek siblings. Sadelli managed to break free shortly before their scheduled transport to Nal Hutta, and a spacer dispatched by JillJoo Jab accompanied her back to Mos Espa. However, Sadelli refused to depart without rescuing her younger sister, prompting JillJoo to send the spacer to liberate Soolami as well.
As a result of JillJoo and the spacer's actions, Woff B'tar found himself traveling to Jabba's Palace to account for the missing slaves. Upon discovering Woff's location, JillJoo dispatched the spacer to assassinate him. Despite being accompanied by two of Jabba's henchmen, the spacer successfully eliminated them all.
Before its shutdown on December 15, 2011, Woff B'tar appeared as a non-player character in Star Wars Galaxies, a massively multiplayer online roleplaying game created by Sony Online Entertainment and released by LucasArts. Players who completed a series of missions for JillJoo Jab in Mos Espa were tasked with tracking down and eliminating Woff B'tar outside the city.