C-3PO

C-3PO is a protocol droid built by Anakin Skywalker on Tatooine and fluent in over six million forms of communication. His memory was wiped after the Empire was declared; he later served the House of Organa, was sold to Owen Lars with R2-D2, and joined the Rebel Alliance. He translated for the Ewoks before the Battle of Endor and continued with Leia Organa and the Resistance, a reluctant witness to three generations of the Skywalker family's wars.