Protocol droid/Legends

Protocol droids were a type of droid designed to assist sentients in their relations with one another, often as translators (between sentients or between sentients and computers).

They also possessed knowledge about various cultures and customs, in order to advise those for whom they are working, and also so that they themselves may behave in a diplomatic and culturally sensitive manner.

Protocol droids constructed around 4,000 BBY (around the time of the Great Sith War and the Jedi Civil War) were frequently engineered with certain situational and behavioral shifts set to occur whenever another design-generation was reached. A number of these droids underwent radical changes with each new generation&mdash;for example, when a C7-model droid supplanted the C6 variety. Each numeric "jump" in sequence could have had wide-ranging changes in functionality and temperament during that historical period.

Cybot Galactica, the most famous and successful manufacturer of protocol droids, outfits them with SyntheTech AA-1 VerboBrains to give protocol droids personalities with emotions and the ability to learn and grow very similar to organic beings. The 3PO unit possessed a TranLang III Communications device that can reproduce over six million languages, as well as reproducing any sound it picks up.

The most famous protocol droid was C-3PO.

Example units

 * 4-LOM
 * B-4D4
 * C-3PO
 * CZ-0R6
 * CZ-3
 * CZ-4
 * E-3PO
 * K-3PO
 * R-3PO
 * TC-14
 * U-3PO

Appearances

 * Star Wars: Knights of the Old Republic
 * Star Wars: Knights of the Old Republic II: The Sith Lords
 * Star Wars Episode I: The Phantom Menace
 * Star Wars Episode II: Attack of the Clones
 * Star Wars Episode III: Revenge of the Sith
 * Star Wars Episode IV: A New Hope
 * Star Wars Episode V: The Empire Strikes Back
 * Star Wars Episode VI: Return of the Jedi