Geonosian royal guards functioned as bodyguards, consisting of Geonosian warriors. Two of these guards escorted Archduke Poggle the Lesser to the Progate Temple in 21 BBY, specifically during the Second Battle of Geonosis.
The Star Wars: The Clone Wars episode "Legacy of Terror" marked the initial appearance of Geonosian royal guards. Their identification occurred in the original episode guide associated with that episode.