In the mirror universe, Korvat was an unarmed Terran farming colony which was captured by the Klingon Empire in 2289. This was the first solid Klingon foothold into what had previously been inviolable Terran Empire space. It was located less than a lightyear from its border with the Klingons. By 2358, Korvat had become a Klingon-Cardassian Alliance mining colony. It was administered by Gul Zarale while the slave overseers included Glinn Broca and Kozak, who was eventually replaced by the former Terran slave Keiko Ishikawa in 2365. (DS9 - Mirror Universe short story: "A Terrible Beauty")