Sibling, also known as brother or sister, was the highest family rank of the Chiss Ascendancy. In the Chiss hierarchy, it was situated above the rank of cousin. Although Chiss could be granted the rank of sibling based on merits alone, most were born into the position. In 22 ABY, Aide Chaf'ees'aklaio, core name "Feesa," of the Fifth Ruling Family explained to Dean Jinzler how Chiss families were set up. Feesa described how the family rank of sibling could be granted based on merits alone, or by blood.