Protocol droid/Legends

"I'm not much more than an interpreter, and not very good at telling stories."

- C-3PO

A protocol droid was a type of droid designed to assist sentients in their relations with one another and were programmed mostly for etiquette, and were often used 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, outfited 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 could reproduce over six million languages, as well as reproduce any sound it picked up. Some models, such as the pricey E-3POs, also included the TechSpan I module, making it possible to interface with Imperial networks and undocumented technologies of Imperial subcontractors. To date, there are very few feminine-programmed protocol droids.

Protocol droid lines

 * 3DO Protocol/Service Droid; manufactured by Duwani Mechanical Products
 * 3PO-series protocol droid; manufactured by Cybot Galactica
 * 5YQ-series protocol droid; manufactured by Cybot Galactica
 * B-1 series protocol droid
 * CZ-series communications/business droid; manufactured by Serv-O-Droid, Inc.
 * GE3-series protocol droid; manufactured by Czerka Corporation
 * LOM-series protocol droid; manufactured by Industrial Automaton
 * M-3PO military protocol droid; manufactured by Cybot Galactica
 * Orbot protocol droid; manufactured by Serv-O-Droid, Inc.
 * RA-7 protocol droid; manufactured by Arakyd Industries
 * Registration protocol droid
 * TC-series protocol droid; manufactured by Cybot Galactica

Notable units

 * 4-LOM
 * B-4D4
 * C-3PO
 * C-3PX
 * C-5MO
 * Chiba DR-10
 * CZ-0R6
 * CZ-3
 * CZ-4
 * E-3PO
 * I-5YQ
 * K-3PO
 * M-3PO "Emtrey"
 * M-TD
 * Nobot
 * P-RC3
 * R-3PO
 * RA-7
 * SP-99
 * TC-3
 * TC-4
 * TC-5
 * TC-14
 * TC-16
 * U-3PO
 * 1B-8D-GE3

Appearances
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 * Star Wars: Knights of the Old Republic
 * Star Wars: Knights of the Old Republic II: The Sith Lords
 * Star Wars: The Rise and Fall of Darth Vader
 * Cloak of Deception
 * Darth Maul: Shadow Hunter
 * Droids Everywhere!
 * Episode I Adventures Game Book 4: Jedi Emergency
 * Star Wars Episode I: The Phantom Menace / novel / junior novel
 * Episode I: Qui-Gon Jinn
 * {{LFC|A Revelation}}
 * {{LFC|Clouded Paths}}
 * {{LFC|Into the Storm Clouds}}
 * Star Wars Episode II: Attack of the Clones / novel / junior novel
 * Boba Fett: Maze of Deception {{Mo}}
 * {{CW|1}}
 * {{CW|15}}
 * {{CW|16}}
 * {{CW|21}}
 * {{CW|23}}
 * {{CWACite|9|No Way Out}}
 * Star Wars Republic: The New Face of War
 * Star Wars Republic 63: Striking from the Shadows
 * MedStar I: Battle Surgeons
 * {{InsiderCite|83|MedStar: Intermezzo}}
 * Jedi Trial
 * {{TCW|Destroy Malevolence|Destroy Malevolence}}
 * {{TCW|Bombad Jedi}}
 * {{TCW|Trespass}}
 * {{TCW|Blue Shadow Virus}}
 * {{TCW|Hostage Crisis}}
 * {{TCW|Brain Invaders}}
 * Keep the Faith
 * Star Wars The Clone Wars 12: Hero of the Confederacy, Part 3
 * Boba Fett: A New Threat
 * Labyrinth of Evil
 * Star Wars Episode III: Revenge of the Sith
 * Star Wars Episode III: Revenge of the Sith novel
 * Star Wars Episode III: Revenge of the Sith junior novel
 * {{CWACite|9|Salvaged}}
 * Star Wars Republic: Into the Unknown
 * Dark Lord: The Rise of Darth Vader
 * Coruscant Nights I: Jedi Twilight
 * Coruscant Nights II: Street of Shadows
 * The Last of the Jedi: A Tangled Web
 * Droids Special
 * Droids: The Kalarba Adventures
 * Droids: Rebellion
 * Droids: Season of Revolt
 * Droids: The Protocol Offensive
 * The Farlander Papers
 * Star Wars Journal: The Fight for Justice
 * Death Star {{Holo}}
 * Star Wars Episode IV: A New Hope
 * Star Wars Episode IV: A New Hope novel {{1st}}
 * LEGO Star Wars II: The Original Trilogy {{Nc}}
 * Star Wars: Rogue Squadron II: Rogue Leader
 * Star Wars: Rogue Squadron III: Rebel Strike
 * The Star Wars Holiday Special
 * Star Wars: Empire at War
 * Star Wars: Galactic Battlegrounds
 * Star Wars: Galaxies
 * Star Wars Missions 1: Assault on Yavin Four
 * Star Wars Missions 2: Escape from Thyferra
 * Star Wars Missions 3: Attack on Delrakkin
 * Star Wars Missions 4: Destroy the Liquidator
 * Star Wars Missions 5: The Hunt for Han Solo
 * The Rebel Thief
 * X-wing Marks the Spot
 * Super Star Wars
 * A Hunter's Fate: Greedo's Tale {{Po}}
 * Marvel Star Wars
 * The Day after the Death Star
 * Death Star Pirates
 * The Keeper's World
 * Weapons Master
 * Star Wars 3-D
 * Vader's Quest
 * Star Wars Empire: Princess... Warrior
 * Star Wars Empire 22: Alone Together
 * The Mystery of the Rebellious Robot
 * Junkheap Hero
 * Splinter of the Mind's Eye
 * Splinter of the Mind's Eye comic
 * Star Wars Episode V: The Empire Strikes Back
 * Entrenched
 * Thank the Maker!
 * Super Empire Strikes Back
 * The Hoth Adventure
 * Shadows of the Empire novel
 * Shadows of the Empire comic
 * {{Journal|2|The Way of the Yrashu}}
 * Fortune, Fate, and the Natural History of the Sarlacc
 * Star Wars Episode VI: Return of the Jedi
 * Super Return of the Jedi
 * Tales from Jabba's Palace
 * Free Memory
 * The Truce at Bakura
 * A Wookiee Scorned
 * Shadows of the Empire: Evolution
 * Marooned {{Mo}}
 * The Glove of Darth Vader
 * Collapsing New Empires
 * X-wing: The Krytos Trap
 * X-wing: The Bacta War
 * The Courtship of Princess Leia
 * Corphelion Interlude
 * Tatooine Ghost
 * Tall Tales {{Flash}}
 * Dark Empire
 * Dark Empire II
 * Empire's End
 * The Other
 * Jedi Search
 * Children of the Jedi
 * Darksaber
 * Planet of Twilight
 * The Crystal Star
 * The Black Fleet Crisis
 * The New Rebellion
 * Specter of the Past
 * Vision of the Future
 * Star Wars: Union
 * Young Jedi Knights
 * Chewbacca
 * Revenants {{Mo}}
 * Vector Prime
 * Dark Tide I: Onslaught
 * Agents of Chaos I: Hero's Trial
 * Balance Point
 * Edge of Victory II: Rebirth
 * Star by Star
 * Enemy Lines I: Rebel Dream
 * Destiny's Way
 * Force Heretic I: Remnant
 * Force Heretic II: Refugee
 * Or Die Trying
 * Force Heretic III: Reunion
 * The Unifying Force
 * Dark Nest I: The Joiner King
 * Dark Nest II: The Unseen Queen
 * Dark Nest III: The Swarm War
 * Betrayal
 * Bloodlines
 * Tempest
 * Sacrifice
 * Inferno
 * Fury

Non-canon appearances
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 * LEGO Star Wars: The Video Game
 * LEGO Star Wars: The Complete Saga