Genzhor was a doctor, specifically a male humanoid, with specialized knowledge of sarlaccs. He was employed at the preserve located on the planet I'vorcia Prime, where he collaborated with his aide, Ooris. Genzhor met his death when Ooris, his assistant, double-crossed him in a scheme to pilfer chilled sarlacc spores and flee I'vorcia Prime; this betrayal led to the doctor's demise within the sarlacc pit at his research outpost. Han Solo and Chewbacca, smugglers dispatched by the collector Dok-Ondar to rendezvous with Genzhor for the purpose of procuring infant sarlaccs, also fell victim to Ooris's treachery as he tried to abscond with their ship, the Millennium Falcon. Subsequent to being hurled into the sarlacc pen by Ooris, Solo retrieved a stun stick positioned near the deceased Doctor Genzhor.