Kepzyr was the home planet of the Kepzrs.
In the 49th century, Kepzyr was savage and underdeveloped. It was the location of the Unheard Treasure of Kep-ili-Koo.
In the 109th century the planet was a thriving mid-level civilisation. The actions of Frank Reade Jr turned it into a wasteland by this time. (PROSE: Frank Reade, Jr.'s Electric Time Canoe)