Background
Made on Coruscsnt by an Imperial Scientist who specialized in computer sciences. Needing a Droid companion who could assist in projects.
Not getting a standard memory wipe, the Droid developed a personality of a rather chirpy and hyper Droid that would chirp in excitement and spin around randomly when happy.
During the battle at Death Star 2 over Endor, there was a massive slave revolt on Titan, and the scientist was killed in the resulting fight. The Droid would flee to the nearest village. After a few years of wandering, the Droid searched for a new owner, and use, hanging around outside the Cantina, waiting for the perfect person.
Motivation