Phylanx Redux Transmitter The Phylanx Redux Transmitter was originally a medical droid owned by an Amani gang on Utapau . Biography . Around thirteen years before the Battle of Yavin , it accompanied its masters in the kidnapping of two medical prodigies , one being a Pau ' an named Fyzen Gor . Gor later went on to become the droid s master after the Amani gang crashed their speeder and the young Pau ' an killed all that remained . Gor renamed the droid Number One , equipping him with the arm of his dying friend , Greesto Ftrak . Gor became obsessed with manufacturing beings with both mechanical and organic parts , believing that if organic beings were allowed to use droid parts to replace lost limbs , droids should be allowed to do the same . He even recovered whatever mechanical and organic parts he could from the Amani speeder crash , and he and Number One exiled themselves from society in the cave s deep below the surface of Utapau , where Gor could continue his experiments without disturbance . However , two years later , the two were confronted by a tribe from an Amani clan called the Wandering Star , who were upset that Gor was kidnapping their young and stealing their limbs . The Wandering Star destroyed all of Gor ' s droids except for Number One , who was only gravely injured , and took them both as servants of their gang . It would not be for many years until Gor eventually escaped servitude and was able to put his plans into action . Sometime prior to 8 BBY , Gor began experimenting on Number One , turning the droid into a weaponized device known as the Phylanx , which he would one day use to turn all droids in the galaxy against their masters and eradicate all organic beings . However , he was soon discovered and compromised by Lando Calrissian and his droid , L3 - 37 aboard the " Millennium Falcon " . Gor managed to elude them , though L3 was able to install a virus into the Phylanx that would implant doubt into its mind . The intent was that this doubt would fester , and the Phylanx would one day turn on its master . She also used spare parts from Gor ' s experiments to create an elite squadron of L3 - class droids like herself to find the Phylanx and see to it that her plan came to fruition . Five years later , Gor murdered every member in the Wandering Star , finally freeing himself of their grip and beginning his plans for galactic domination . However , the Wandering Star had already gotten a hold of the Phylanx and were auctioning it off to various criminal clans . It eventually landed in the hands of the smuggler , Sana Starros , who was working for the Droid Gotra . in Maz Kanata ' s castle on Takodana , Starros recruited fellow smugglers Han Solo and his Wookiee companion , Chewbacca in getting the Phylanx safely to her benefactor . When the " Millennium Falcon " was boarded by Gotra ' s gang , and a rival gang called the Parapa Cartel , Solo threw the Phylanx out the airlock , losing it forever , along with the fortune he and Chewie needed to pay off crime lord Jabba Desilijic Tiure . Two years after the defeat of the Galactic Empire , Gor manipulated Calrissian and Solo into locating the Phylanx for him by threatening the peaceful existence of Calrissian ' s home , Cloud City on Bespin . They tracked it to the Messulin Remnants , where the Phylanx was planted on an asteroid aboard the same freighter Calrissian and L3 had years before . Calrissian worked to destroy the Phylanx , though he was captured by Gor , who then activated the Phylanx kill - switch . The Phylanx transmitted a message to every droid in the galaxy to kill their masters . However , Calrissian pulled out two thermal detonator s , destroying the freighter , along with Gor and the Phylanx . Calrissian , however , was rescued from the explosion from the L3 - squad , and flown to safety . Legacy . The Phylanx Redux Transmitter nearly caused mayhem and havoc for all organic beings , including the near - death of Han Solo ' s son , Ben . Characteristics . In its early life , the Phylanx was a medical droid , and was therefore equipped with several different medical supplies and was programmed to know various different procedures and operations in case of emergency . As with most droids of any class , it was programmed with a sense of loyalty , so much so that as soon as his masters were killed , it swore allegiance to Fyzen Gor to continue service . This loyalty was later compromised by L3 - 37 after she implanted a virus into the Phylanx . Doubt caused it to have a mind of its own , which would prove beneficial to Calrissian at the end .