Shaker was an R2-series Drewwa spaceport maintenance astromech droid that accompanied Ben Skywalker on his mission to find the Amulet of Kalara on Ziost. During the search, Shaker became a kind of conscience for Ben, wondering why he would leave a little girl stranded on a dangerous planet.
Shaker was left by Ben on Drewwa to take care of Kiara Olvidan.
- The Complete Star Wars Encyclopedia