Catlia was a planet that was located within the Catlia system, in the Chiss Space area of the galaxy's Unknown Regions. It was connected by the Phalanx Route hyperlane to the planet Cormit. Catlia was an outlying colony of the sentient Chiss species, and was home to one of the Ruling Families that ruled over the Chiss Ascendancy, the government of the Chiss. At some point before the year 28 ABY, the resident Ruling Family employed hives of the sentient Killiks as a work force. As a result, the Family fell out of power that year, and its members became Joiners—a part of the Killiks' hive-mind.