Avatar Kyoshi was the -born immediately succeeding Avatar of the Northern Water Tribe, and preceding Avatar of the Fire Nation. She died at the age of 230, earning her the title of oldest known human. Kyoshi was a very tall woman, possessing the largest feet of any Avatar. Her traditional weapons were golden metal fans which, in addition to her manner of dress and style of fighting, were adopted by the of , her homeland.
Unlike her successors, Roku and , Kyoshi was determined that only true justice could bring peace, and had no qualms about killing enemies to achieve this goal. Employing these methods, she was a generally effective Avatar. However, some of her actions also caused long-term problems for the Earth Kingdom; while ushering the world into a 233 year-long era of peace, the death of Chin the Conqueror and her foundation of the would led to the , , and of her home country. Because of this, Kyoshi later came to deeply regret the creation of the Dai Li.