Tenzin (丹增 Dān Zēng?) is a major character in The Legend of Korra, which aired from 2012 to 2014. The character and the series, a sequel to Avatar: The Last Airbender, were created by Michael Dante DiMartino and Bryan Konietzko. He is voiced by J. K. Simmons. Tenzin's father, Aang, was the Avatar who preceded Korra and kept world peace by preventing the Fire Nation from destroying the Earth Kingdom during the 100-year war, which occurred about seventy years before the beginning of The Legend of Korra. Tenzin's mother, Katara, greatly assisted Aang in his efforts to save the Earth Kingdom from destruction. Tenzin is the youngest of the three offspring of Aang and Katara.
As the only airbender to be born in over a hundred years, Tenzin was extensively taught the traditions and customs of the Air Nomads by his father and eventually earned the traditional Air Nomad arrow tattoos, symbolizing his status as an airbending master. Tenzin inherited most of his father's mementos prior to his father's death. As a child, Tenzin was often the victim of Bumi and Kya's teasing, who liked to play rough games with him, though the siblings still maintained a healthy relationship, and Tenzin was supportive of Kya when she revealed her sexual orientation to him.
In 158 AG, after Korra's identity as the new Avatar was revealed, Tenzin joined forces with Southern Chief Sokka, Fire Lord Zuko, and Korra's father, Tonraq, to prevent a kidnapping threat forged by Zaheer, Ghazan, Ming-Hua, and P'Li. They were able to defeat and apprehend the criminals and imprison them in four separate and specially-designed prisons that would neutralize their combative abilities. Because of this threat, Tenzin and Tonraq decided to move Korra to the Southern Water Tribe compound where she could safely train.