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), wheel droid, roller, or rollies in clone trooper slang, was a type of heavy battle droid used by the Axis of Empires. It gained a reputation for deadliness over the course of the Multiverse 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 Multiverse Wars, such as Muunilinst, usually in moderate numbers due to their cost, and were also used as guards in various Axis installations. The Axis Navy also utilized droidekas as security droids aboard their ships. Droidekas are also fell into the hands of independent factions.