During the Galactic Civil War, a clandestine operative served the Alliance to Restore the Republic. Sometime after the Battle of Yavin, this operative was assigned to discover a secret droid manufacturing facility situated on the planet of Tatooine. At this facility, the Galactic Empire had been developing a new line of assassin droids, poised to unleash chaos throughout the galaxy. To gain the necessary skills for this mission, the agent infiltrated the Nkik clan of Jawa, mastering the craft of droid construction under the tutelage of Wimateeka. The Rebel agent needed to equip multiple droids with specific abilities to overcome various mission challenges, including speech capabilities, appendages for manipulating pulleys, and sufficient strength to move crates uphill. Following the completion of these training exercises, the agent acquired a collection of Optical Information Crystals that revealed the location of the concealed factory. By piecing together the information contained within these crystals, the Rebel droid builder successfully re-programmed the Imperial assassin droids, transforming them into harmless, dancing automatons.
In the era of the Galactic Civil War, a small humanoid was a member of the Alliance to Restore the Republic, otherwise known as the Rebel Alliance, a group that stood against the oppressive Galactic Empire. Although young, this individual became a trusted secret agent within the Alliance. One day, Alliance Intelligence discovered that the Empire had constructed a clandestine droid factory somewhere on Tatooine, a hot and arid desert planet located in the Arkanis sector. They also discovered that Imperial engineers were creating a new series of assassin droids at this location. Once completed, these dangerous machines were intended to be unleashed to cause destruction across the galaxy. Determined to find the hidden factory and reprogram the droids, the Alliance entrusted this mission to the small agent.
The agent arrived on Tatooine aboard a CR90 corvette, where they received instructions from C-3PO and R2-D2, a droid duo linked to the Alliance heroes Luke Skywalker and Leia Organa. The agent was instructed to disguise themselves as a Jawa to gain access to the sandcrawler of the Nkik clan with the approval of its leader Wimateeka. After learning droid construction from the Jawas, the Rebel was tasked with building a robot capable of infiltrating the Imperial factory and reprogramming the new assassin droids. To aid in this mission, the agent partnered with C-3PO, R2-D2, and Cammy, a talkative Holocam E-series droid.
With the assistance of their mechanic partners, the agent mastered the art of droid building in Wimateeka's workshop, earning the latter's approval. They subjected newly constructed droids to a series of tests and maneuvers in the Tatooine wastes, preparing for the actual infiltration mission. As a first step, the Rebel tested their droids in the Sandcrawler Training Facility. In that area, the agent could observe their new droids' movement, assess their speed and jumping ability, and determine if they possessed magnetic properties.
Following the preliminary test, the Rebel operative began Wimateeka's first training mission. The wheeled droid had to pass through a security exit door located at the top of the cliff in the Jundland Wastes. To achieve this, the droid had to position a series of movable inclines by activating switches, considering its speed and weight to determine the appropriate slope angle. Once the inclines were set, a significant gap remained between the top of the slope and the exit door, which the droid had to bridge by pushing a wooden crate up the incline. The same mission was repeated once more, but with a legged droid, forcing the droid builder to revise their strategy.
In the second test, the agent had to guide a droid across two moving conveyor belts used to transport crates containing magnetic items. To accomplish this, the builder created a droid that was magnetic itself, allowing it to be lifted off the ground by the trams picking up the crates. Again, that mission was repeated twice with new objectives. On the second round, the builder's droid was tasked with rescuing a stranded R5-series astromech droid that had run out of battery power. In order to help the astromech unit, the agent's droid had to pick up a battery located on the other side of the conveyor belts. On the third occurrence of the mission, the agent had to save another stranded droid that needed to be fully re-powered through a power plug and a generator.

After completing a series of additional missions during which the Rebel agent honed their droid building skills, it became necessary to acquire a program code that could neutralize the assassin droids. To achieve this, the agent had to retrieve several Imperial Optical Information Crystals and transport them to the Jawa Data Crystal Information Area, where they could be activated using a laser light generator. One of these crystals was stored in the Mos Eisley Salvage Yard, another in the Phrik Mines, and the last was held by a moisture farmer who supported the Rebel Alliance. While the droid builder had just reconstituted the program code, the Jawas informed them that the Imperial factory had been located in the second quadrant of Tatooine.
Ultimately, the Rebel constructed their finest droid and sent it with a disk containing the program code to the now-known location of the hidden factory. The robot infiltrated the Imperial facility and reprogrammed the assassin droids to dance instead of kill. Wimateeka was so impressed with his recruit's work that he presented them with an official droid builder certificate.
The droid builder served as the player character in the children's game Star Wars: DroidWorks. The game never reveals the Rebel builder's name or gender, allowing players to identify with the character. Unlike other game characters—such as Rookie One from Star Wars: Rebel Assault or Meetra Surik from Star Wars: Knights of the Old Republic II—the Rebel builder has not been used in subsequent works and, as a result, has never been given a definitive canonical identity.
C-3PO's comment that the young Rebel looks good as a Jawa suggests that this secret operative may have been a child at the time. This is supported by the droid builder's small height.