The Gloam monsters consisted of Katikoot species members, now undead, who had succumbed to the Miner's curse. This disease originated from living minerals present on the planet Gloam. These creatures were a part of Katikoot lore, appearing in tapestries within the Ancient city. Around 382 BBY, the subterranean passageways beneath the ancient city were re-purposed for [mining](/article/mining] a unique fuel source, following the depletion of the Gloam mines. This act inadvertently released numerous Gloam monsters that had been lying dormant onto the planet.