Geonosians were a winged, semi-insectoid species native to the planet Geonosis that created nests in large, spire-like colonies on their homeworld. They were nearly exterminated by the Empire. Only a single Geonosian, nicknamed Klik-Klak, survived the Imperial sterilization of their planet.

A caste-based species separated by positions of drones and warriors, Geonosians were born into hives with each led by a queen. The queen laid eggs for the hive, and provided orders to the public leaders of Geonosis. One such queen, Karina the Great, was even able to control sentient beings, including her own kind, via the use of brain worms. It was believed by some that «Karina the Great» was the name assigned to every reigning queen, instead of being the name of one specific individual, but one queen only called herself «Karina» because of her own insanity. No matter the case, Geonosian queens resided underground in the catacombs of Geonosis. From here, they commanded an army‘s worth of Geonosian drones.