RB-551/Legends

"Look, it's RB-551.''" "No wonder he got blasted. He's one of those older models programmed by a central computer." "Not us; we're independent thinkers." "Roger, roger." "Roger, roger." "''Roger, roger."

- Several battle droids, upon finding RB-551's defunct cranial unit

RB-551 was a B1 battle droid serving the Confederacy of Independent Systems during the Clone Wars. One of the older units controlled by a Central Control Computer, he was destroyed during the Battle of Ryloth in 21 BBY.

Biography
RB-551 was a B1 battle droid manufactured by Baktoid Combat Automata for service in the Separatist Droid Army. He was an older model of battle droid, one that was controlled by a Central Control Computer. In 21 BBY, the Confederacy of Independent Systems invaded the Twi'lek homeworld of Ryloth, and RB-551 was among the battle droids that participated in the battle. At some point of the conflict, he was destroyed near the city of Cazne, the site of a major battle between the Confederacy and the Twi'lek freedom fighters led by Cham Syndulla. His remains were later found by a group of newer, independent-thinking model, battle droids that were on the lookout for a missing patrol in that region. The droids reflected on RB-551's dependency on a central computer, believing themselves to be superior to him; however, they were destroyed immediately thereafter by Syndulla and his freedom fighters.

Features and functions
RB-551 was programmed by a central computer, which limited his independent thinking.

Behind the scenes
A quote in the official guide for The Clone Wars television series episode "Liberty on Ryloth" on StarWars.com described a scene not present in the aired cut of the episode, featuring a droid named RB-551. The scene was eventually released in the episode's "Director's Cut" version, as part of the Star Wars: The Clone Wars: The Complete Season One DVD Collection.

Notes and references
RB-551 RB-551