The battle armor known as Katarn armor was utilized by clone commandos belonging to the Grand Army of the Republic during the Kashyyyk campaign. This armor bore a resemblance to Phase II clone trooper armor and, like the Katarn-class commando armor, took its name from the katarn, a predatory creature native to Kashyyyk. This armor came in several variations, including patterns II, III IV and VII. Despite its origins in the Clone Wars, Katarn armor continued to see limited use during the time of the Galactic Civil War. The Galactic Empire, the Alliance to Restore the Republic, and independent spacers all employed this armor. Notably, a clone commando named Mort presented at least one of his Katarn armor suits to someone who sought revenge on a former commanding officer by the name of Morkov.
Katarn armor, while sharing a name with both Katarn-class commando armor and the predator that inspired it, bore the strongest resemblance to Phase II clone trooper armor. Unlike the standard, clean white of clone trooper armor, Katarn armor featured distinct color schemes depending on the specific type. The II patterned version, for example, was predominantly white with blue markings on various components. The IV variant mirrored this design, but incorporated red markings and a black utility belt. In this way, these two versions of the armor were somewhat reminiscent of those worn by 501st Legion clone troopers and clone shock troopers from the special forces. The VII version stood apart, featuring a predominantly black color scheme with greenish-yellow accents, similar to the armor worn by clone shadow troopers.
During the time of the Galactic Civil War, the Galactic Empire was observed to use the VII pattern of Katarn armor. Meanwhile, the IV models ended up being used by the Alliance to Restore the Republic, and the II variety was primarily utilized by unaffiliated civilians and mercenaries.
An ex-clone commando named Mort gave at least one of his Katarn armor suits to an individual who sought revenge on a former commanding officer called Morkov.
Katarn armor is present in the MMORPG Star Wars Galaxies, having been included in the Rage Of The Wookiees expansion pack. Players can obtain it as a reward for finishing the Avenging Mort quest, which is part of the Clone Relics quest line. The specific Katarn armor type received depends on the player's faction alignment, with Rebel players receiving Mark IV, Imperial players receiving Mark VII, and neutral players receiving Mark II.