Droideka

The droideka (a compound word combining the Basic word "droid" with the Colicoid suffix eka, meaning "hireling" or "drone"), also called the destroyer droid (destroyers for short), death balls, wheel droid, roller, or rollies in clone trooper slang, was a type of heavy battle droid used by the Trade Federation and the Confederacy of Independent Systems. It gained a reputation for deadliness over the course of the Clone Wars. Droid commanders such as General Grievous favored the droideka for its resilience and firepower, as well as the fear it could instill in even the most powerful Jedi. They were also used for executions. They were deployed in many battles over the course of the Clone Wars, such as Muunilinst, usually in moderate numbers due to their cost, and were also used as guards in various Confederate installations. Trade Federation and Confederate Navy also utilized droidekas as security droids aboard their ships. After the Clone Wars, remaining droidekas fell into the hands of a variety of factions such as smugglers and criminals.

Text and facts from the “Droideka/Legends” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.