Shocker
this highly-maneuverable combat droid, resembled a winged sphere, was developed by the Confederacy of Independent Systems during the early stages of the Clone Wars. The two pairs of wings allowed it to move in tight circles and avoid laser fire, while a dedicated power generator allowed it to fire a burst of intense, electrical energy at its target. In this way, it could incapacitate a living being or overload an electrical system. The primary development facility for shocker droids was hidden on the planet Dagro, until it was destroyed by Obi-Wan Kenobi and Anakin Skywalker, about a year after the Battle of Geonosis.