C-3PO is a robot character from the Star Wars universe who appears in both the original Star Wars films and the prequel trilogy. He was also a major character in the ABC television show Droids, and appears frequently in the series' 'Expanded Universe' of novels, comic books, and video games. Along with Anakin Skywalker (Darth Vader), Obi-Wan Kenobi and R2-D2, he is one of only four characters to appear in all six Star Wars films. C-3PO (played by Anthony Daniels) and R2-D2 (played by Kenny Baker) are the only characters portrayed by the same actor in all six films. C-3PO is a protocol droid designed to serve human beings, and boasts that he is fluent in 'over six million forms of communication'. He is generally seen with his long-time counterpart, R2-D2. Threepio's main function is to assist etiquette, customs, and translation, so that meetings of different cultures run smoothly.
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