The natives lived in city-trees, while wide areas of the planet were made barren by kiltik beetles.
The Giant horned hopper were often killed by the Cathar species in blood hunts.
The planet was conquered by the Mandalorians during the Battle of Cathar, leading to the enslavement and near-extinction of the Cathar species. The few survivors were forced to flee offworld to survive. After the end of the Mandalorian Wars Cathar began to resettle their world and by the time of the Galactic Civil War, it had fully recovered from the damage the Mandalorians had done. Prior to the planet's devastation, it was not a member of the Galactic Republic.
Cathar was conquered by the Yuuzhan Vong during the Yuuzhan Vong War. The invaders overran the planet prior to their attack on Coruscant in 27 ABY.
The 1996 PC game Star Wars: Rebellion mistakenly places this planet in the Abrion sector. The planet is really in the Quelii sector in the Outer Rim Territories at coordinates N-6 according to The Essential Atlas.
In The Essential Atlas Cathar is also plotted at N-7 on the map of the Expansion Region. This was confirmed to be a mistake by Jason Fry.
- "Straight from the Horse's Mouth: A Guide to the Star Wars: Tales of the Jedi Universe, Part 1" — Star Wars Insider 26
- "Straight from the Horse's Mouth: A Guide to the Star Wars: Tales of the Jedi Universe, Part 3" — Star Wars Insider 28
- Tales of the Jedi Companion
- Star Wars: Rebellion: Prima's Official Strategy Guide
- Ultimate Alien Anthology
- The New Essential Chronology
- Knights of the Old Republic Campaign Guide
- The Complete Star Wars Encyclopedia
- The Essential Atlas
- The Essential Guide to Warfare
- Star Wars: Edge of the Empire Core Rulebook
- Star Wars: Age of Rebellion Core Rulebook