The TC-series Protocol Droid is a protocol droid designed with a specialized vocabulator and an encyclopedic knowledge of languages and cultural information. It possesses a standardized humanoid design, available in a wide array of colors but all possessing the same basic form with its notably restrained range of movement. It also possesses a more advanced VerboBrain than the common 3PO-series that enables it to quickly analyze new languages and translate them into more well-known ones.