A Horned gekko was a species of lizard that was native to the desert planet of Tatooine. This lizard possessed the ability to crawl into a host's body, inducing hallucinations, and the Tusken Raiders utilized this ability to guide individuals through spiritual experiences.
Back in 4 ABY, Valnir Nai, who worked as a serving girl waitress, rushed into the kitchens of Jabba's palace to speak with her friend Laizhu Bedenn. She was so out of breath that Bedenn jokingly remarked that it seemed like she had a horned gekko crawl up her nose. Nai responded by informing Bedenn about the wealth of Jabba's current guests.
In 5 ABY, the chieftain from one tribe presented one of these lizards to Boba Fett, the former bounty hunter, who had gained the trust of the Tusken people.
While wandering the Dune Sea, Fett was plagued by dreams of his past, experiencing visions of his youth on Kamino and his near-death experience within the sarlacc in the Great Pit of Carkoon. Eventually, he discovered a Wortwood tree in the desert and broke off a branch to craft his own gaderffii stick. Upon his return to the tribe, the lizard exited Fett's nostril and was returned to a small cage maintained by the chieftain.
The horned gekko made its debut appearance in the second episode of The Book of Boba Fett, a television series available on Disney+. Steph Green directed the episode, which was broadcast on January 5, 2022.