Phylanx Redux Transmitter

The Phylanx Redux Transmitter was originally a Medicaldroid owned by an Amani gang on Utapau. Around thirteen years before the Battle of Yavin, it accompanied its masters in the kidnapping of two university medical prodigees, one being a Pau'an named Fyzen Gor. Gor would later go on to be the droids 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, Gristo.

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 caves 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 Fyzen was kidnapping their young and stealing their limbs. The Wandering Star destroyed all of Fyzen 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 survitude and was able to put his plans into action.

Sometime prior to Han Soloa weaponizable edevice known as the Phylanx, which he would one day use to turn all droids in the galaxy against their masters and irradicate all organic beings. However, he would soon be discovered and compromised by Lando Calrissian and his droid, L3-37 aboard the Millennium Falcon. Gor managed to allude 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 farts from Gor's experiments to create an elite quadron of L3-class droids like herself to find the PHylanx and see to it that her plan comes int 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 ahold of the Phylanx and were auctioning it off to various criminal clans. It eventually landed in the hands of 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 rivaling 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 Lando Calrissian and Han Solo into locating the Phylanx for him by threatening the peaceful existence of Calrissian's home, Cloud City, Bespin. They tracked it to the Messulin Remnants, where the Phylanx was planted on an asteroid aboard the same freighter Calrissian and L3 had encountered all those years ago. Lando 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 detonators, destroying the freighter, along with Gor and the Phylanx. Lando, 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, who would later grow up to become Kylo Ren and kill his father. After the death of Snoke, Kylo would even take up the mantle of Supreme Leader of the Imperial remnants known as the First Order and dominate the galaxy.

Personality and Traits
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 would later be 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 Lando Calrissian at the end.