C-3PO is a humanoid protocol droid in the Star Wars universe, designed for etiquette and protocol. He is fluent in over six million forms of communication, making him invaluable for diplomatic missions. In 'Star Wars: The Force Awakens,' C-3PO continues to serve the Resistance, aiding in missions and providing essential communication support. Despite his often anxious and fussy demeanor, he is a loyal companion, particularly to his counterpart, R2-D2. C-3PO's character provides comic relief while also highlighting the importance of communication in overcoming challenges.