The KDY-4 tech droid was designed by Kuat Drive Yards about 200 BBY for repairing and building starships. Nicknamed the "builder's buddy" because of its efficiency, usefulness, and easygoing manner, the KDY-4 was a second-degree droid standing roughly 1.5 meters high and equipped with four appendages (two retractable) and three legs.[2] The three legs were equipped with magnets to provide stability while moving through damaged starships.[1]
The memory banks of the KDY-4 were programmed with the specifications and blueprints of every common ship class of the time. Owners often supplemented the droid's database with new designs and models, which made the droid unlikely to have a memory wipe. This often led the droids to develop quirky personalities like other second-degree droids. KDY-4s had a propensity to develop chirpy and upbeat personalities. In addition to being extremely versatile and able to maintain and repair virtually any spacecraft, it also possessed the equivalent strength and lifting power of an above-average humanoid.[1]
The droid was manufactured solely by Kuat Drive Yards and was generally not available for sale outside of the corporation, but KDY occasionally saw fit to part with one for the right price.[2]