BLX - 5 BLX - 5 , called " Bollux " by his masters and sometimes known by the alias " Zollux " , was a BLX labor droid once produced by Serv - O - Droid , Inc . He held many jobs over the decades , serving many masters , but is best known for his association with Han Solo and Chewbacca during their time in the Corporate Sector and Tion Hegemony . Biography . Bollux started out as BLX - 5 , a simple labor droid in the Fondor Shipyards , with only the limited personality and intellect needed for his duties . Like other labor droids , he had heavy servomotors and a high - gravity suspension system to haul cargo and perform other strenuous tasks . One day , he was ordered to check a fuel module for mynocks . However , the orders did not specify a return time , so the BLX stayed to observe the mynocks until he judged that he had sufficient information . In the intervening three weeks , the droid supervisors assumed that he had fallen prey to the mynocks , and assigned his work designation to a new labor droid . Due to the size of the facilities at Fondor , it was nearly a year before anyone noticed that two labor droids had been given the same designation . Since Bollux had gone without a memory wipe in all that time , he had developed a personality . The staff took a liking to the droid , promoting him to shift overseer and providing him with structural modifications and other upgrades . Despite his popularity , he was eventually replaced with a newer and cheaper droid , and sold as surplus . He traveled the galaxy , working at a variety of jobs . He built survival domes and camps for a planetary survey Alpha - Team , worked on a construction gang for weather - control systems , and became a roustabout for Gan Jan Rue ' s Traveling Menagerie . He even joined a unit of the Galactic Republic ' s military to construct fortifications , followed by a stint as a technical overseer for a Trigdale Foundries mining colony . At every job , he continually sought to improve himself by volunteering for new modifications . Every job ended the same way , however , as he was replaced by a newer model and sold off . At some point during this nomadic existence , he used the alias Zollux for unexplained reasons . Bollux eventually fell in with a group of smugglers , who won him in a dice game . These smugglers traded him to the outlaw tech Klaus " Doc " Vandangante for an enhanced hyperdrive motivator . Doc and his daughter Jessa treated Bollux as part of the family . Jessa used Bollux as a test subject for her droid engineering skills , giving him access to more and more upgrades . The droid had internal components moved to create a chest cavity for holding the slicer droid , Blue Max . The two droids became good friends , with Bollux developing almost paternal feelings for the computer probe . Travels with Solo . For a mission to free Doc and other prisoners from the Corporate Sector Authority , Jessa loaned Bollux and Blue Max to Han Solo . Bollux smuggled Blue Max into Orron III with Solo and his allies to find the location of the prisoners . Bollux helped in their escape from Orron III and later managed to defeat CSA Viceprex Mirkovig Hirken ' s Mark X Executioner gladiator droid at Stars ' End by diving underneath the Mark X ' s treads and ripping out wires . As Solo and the others attempted to escape the Hirken ' s hired bodyguard , Uul - Rha - Shan fired a shot at Solo who was attempting to save Bollux , Bollux threw himself onto Solo to protect him . Bollux however was pierced through his head and was only saved by Blue Max storing Bollux ' s personality in his memory . After freeing the prisoners and escaping Stars ' End , Bollux was given a new , upgraded body by the outlaw techs . Both Bollux and Blue Max were given their freedom by Doc ' s techs . They chose to stay with Han Solo and Chewbacca on the " Millennium Falcon " for a time to see the galaxy , exchanging labor for fare . They helped the two smugglers on several adventures , including breaking up a gang of slavers in the Corporate Sector , and the hunt for the lost treasure of Xim the Despot in the Tion Hegemony , by causing Xim ' s war robots to destroy themselves by ordering all of them onto an old bridge all at once , causing the bridge to break . After that quest wrapped up on Dellalt , Bollux and Blue Max left Han Solo . The historian S . V . Skynx recruited Bollux and Blue Max to stay on Dellalt to help catalog Xim ' s treasure ( mostly the artwork ) to further Skynx ' s research of Xim ' s conquests and adventures . Their activities afterwards are not recorded , though they sent holocard s to Han Solo for a few years afterwards . Behind the scenes . In the original UK release of " The Han Solo Adventures " , Bollux was renamed Zollux , as the original term is homophonous with for the word " testicles " in British English , despite having an alternate spelling . In " The New Essential Guide to Droids " , Zollux was established to be an alias Bollux sometimes used in his travels .