The Kathol sector was a sector in the Outer Rim Territories that bordered the Minos Cluster. During the High Republic Era, the sector fell within the Galactic Republic's Galactic Frontier exploration region. The Kathol sector became part of the Occlusion Zone following its formation in 230 BBY as one of ten sectors sealed behind a barrier preventing hyperspace travel.
The Kathol sector was a space sector located in the Outer Rim Territories that bordered the Minos Cluster and shared its name with the Kathol Rift region.
Harli Cogra documented the formation of the Occlusion Zone, of which the Kathol sector was a part, in Chronicles of the Jedi.
During the High Republic Era, the Galactic Republic designated a section of the Outer Rim—which included the Kathol sector—as the Galactic Frontier, locations considered removed far enough from the galaxy's center to send explorers there. In 230 BBY, the Nihil marauder organization formed the Occlusion Zone—an area of space in the Outer Rim's Frontier that was situated behind the Stormwall barrier preventing hyperspace travel.
As one of the ten sectors forming the boundary of the Occlusion Zone, the Kathol sector was cut off from the rest of Republic space and the worlds within it were forced to pay tributes to the Nihil. Weeks afterward, in 229 BBY, the Vurk Jedi Master Harli Cogra wrote a book titled Chronicles of the Jedi, which detailed the Jedi of the High Republic Era. In the book's afterword, Cogra lamented the formation of the Nihil's region and the ten sectors it affected.
In the current canon, the Kathol sector was first identified in the first issue of the 2023 Star Wars: The High Republic Adventures comic series.
In the current Star Wars canon, the ten sectors forming the Occlusion Zone were first mentioned, albeit unidentified, in a flashback in the second issue of the Star Wars: The High Republic: Eye of the Storm comic-book miniseries. The issue was written by Charles Soule and released by Marvel Comics on March 2, 2022 as part of the Star Wars: The High Republic multimedia project's Phase I. The Kathol sector was later identified by name and specified to be one of the Occlusion Zone sectors via a map in the first issue of the 2023 comic series Star Wars: The High Republic Adventures. The issue was written by Daniel José Older, illustrated by Harvey Tolibao and Nick Brokenshire, and published by Dark Horse Comics as part of Phase III on December 6, 2023.
The Kathol sector originated in the Star Wars Legends continuity, where it was first introduced in Galaxy Guide 2: Yavin and Bespin, Second Edition. The sourcebook was written by Jonatha Ariadne Caspian for West End Games' Star Wars: The Roleplaying Game and published in 1995, at some point by July of that year. The sector made its first full appearance concurrently in Timothy Zahn's short story "The Saga Begins" and several roleplaying adventures, all of which were included in The DarkStryder Campaign, a boxed set of Star Wars: The Roleplaying Game material released by West End Games on July 17, 1995.
- Star Wars: The High Republic: Chronicles of the Jedi
- Star Wars: The High Republic Character Encyclopedia