An R2-series astromech droid served the Galactic Republic as a security droid at the Chancellor Palpatine Spaceport on the planet Coruscant.
In 19 BBY, the R2 unit followed a suspicious R2-series astromech droid, who was Jedi Master Yoda in disguise, into the spaceport's refresher. Yoda used the the Force to leviate himself out of a stall and trap the security R2 unit inside.