Geptish, a terrestrial planet, was the site of a Jedi temple during the age known as the High Republic Era. Silandra Sho, a Jedi Master, and her Padawan, Rooper Nitani, would journey back to Geptish whenever they were not undertaking missions on the Galactic Frontier. Within the practice arena of the temple's, Nitani frequently drilled a specific tactic with Sho; this involved them approaching an unsuspecting person and trapping them in a pincer movement.
In 382 BBY, while situated on the planet Aubadas, Nitani performed the very same maneuver in a real-world situation against the Katikoot named Brithik, recalling all the times she had practiced it on Geptish. Circa 379 BBY, after Sho concealed her shield upon the world of Batuu and assigned Nitani the task of locating it as a component of her Jedi Trials, Nitani explored Sho's preferred meditation locations on Batuu, reflecting on how her Master had similar places on Geptish.
The first reference to Geptish appeared in the 2022 young adult novel titled The High Republic: Quest for the Hidden City, penned by George Mann and released as a segment of Phase II of the Star Wars: The High Republic multimedia initiative.