The Battle Droid was used by The Trade Federation and later the Confederacy of Independent Systems in the Clone Wars. They appear in many Star Wars sets, especially from The Phantom Menace. They were made on factories on distant planets such as Geonosis. After programmed, they were sent on missions against the Republic or used to spread fear on star systems opposing the Trade Federation. Their pieces have been used with several minifigures. It is also seen in several video games. They are led by General Grievous.