- "The Avatar must be compassionate towards all people, and the only way to do that is to live with them. The Avatar must experience sadness, sorrow, anger, joy, and happiness. By feeling all these emotions, it helps you understand how precious human life is, so you will do anything to protect it."
- ―- Avatar Yangchen to Avatar Naruto Uzumaki
The Avatar, formed when Hagoromo permanently fused with Raava during the Harmonic Convergence of 9,829 BG, is the human embodiment of light, balance, and peace through the connection with Avatar Spirit. The only physical being capable of naturally bending all five elements, it is considered the Avatar's duty to master the five bending arts and use its power to keep the balance among the nations of the world, as well as between mankind and spirits.
Upon death, the Avatar reincarnates into the next of the five great nations, dictated by the cyclic order fire, air, lightning, water, and earth, mirroring the order in which the first Avatar, the Sage of Six Paths, learned the elements.