Kokuō (穆王, Kokuō), more commonly known as the Five-Tails (五尾, Gobi), is one of the nine tailed beasts. It was last sealed within Han from Iwagakure, and partially in Gekijou. However, after the Fourth Shinobi War, the whole beast consented to be sealed within Gekijou, having faith in him to restore Iwagakure to its former glory.