A popular character in Star Wars and probably one of the most notable droids of all time, this golden protocol droid was created by a young Anakin Skywalker(Darth Vader later on) and was primarily designed to serve humans. C-3PO is usually seen with that other popular quirky droid R2-D2 (astromech). Threepio handles translation (6 million forms of communication), customs, and etiquette - basic liaisons between humans and the other alien culture their encounter.
This C3PO papercraft model is from Japanese designer/site? uhu02, there are other great sci-fi papercraft models on the site based on other great epic films that you can check out. There's a Time Machine paper model based on H.G. Wells classic film of the same name, a Robby the Robot paper model from Forbidden Planet, a very sexy Maria papercraft from Metropolis, Space Pod paper model from 2001: A Space Odyssey, Bladerunner Blaster, and Will Smith's Noisy Cricket from Men In Black 2.
Star Wars C-3PO Paper Model [Download Page]