Battle droid/Legends

A battle droid (also referred to as war droid, combat droid, or killer droid) was any droid designed for combat.

There were numerous types of battle droids. They predated the Galactic Republic by thousands of years, with the earliest known being Rakatan guardian droids and the war-robots used by Xim the Despot.

Many of the best known battle droids were those used by the Confederacy of Independent Systems during the Clone Wars.

At the end of the Clone Wars, Sith Lord Darth Vader turned off the Master control signal, deactivating most of the Separatist Droid Army. After this, battle droids were extremely rare.

One thing all battle droids had in common was that they had limited intelligence. They were programmed to follow orders, and not much else, though they did have personalities.

Non-canon appearances

 * LEGO Star Wars: The Phantom Menace
 * LEGO Star Wars: The Video Game
 * LEGO Star Wars: The Complete Saga
 * Kowakian Monkey-Lizard
 * Giant spiders are awesome
 * Always count your clones before take-off
 * LEGO Star Wars: The Quest for R2-D2 game
 * LEGO Star Wars: The Quest for R2-D2 film
 * LEGO Star Wars: Revenge of the Brick
 * LEGO Star Wars II: The Original Trilogy
 * LEGO Star Wars: The Padawan Menace
 * Star Wars Battlefront: Renegade Squadron