A 3PO series protocol droid

In the Star Wars universe, protocol droids are mechanical servants designed for etiquette and assisting in sentient relations. Often they will be found performing menial labour for a master or using their impressive linguistic skills to translate communications between different sentient races or between sentients and computers. They are programmed with an extensive vocabulary, capable of fluently conveying millions of different communication formats, making them extremely helpful in matters such as cross-species diplomacy.

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