R-3PO

R-3PO was a 3PO-series protocol droid working at Echo Base for the Rebel Alliance. He worked with high ranking officers and diplomats most of the time. He had a tattoo on his left posterior plating which said, "Thank the Maker."

He escaped the base during the empire’s siege. He then went on to go from owner to owner until winding up working at the Jedi Academy on Ossus.

Behind the Scenes
R-3PO was a droid who worked at Eco Base on hoth. He could be seen roaming Eco Base in The Empire Strikes Back.