Tenzin (The Legend of Korra)

is a major character in Nickelodeon's animated television series "The Legend of Korra", which aired from 2012 to 2014. 
The character and the series, a sequel to "", were created by Michael Dante DiMartino and Bryan Konietzko. He is voiced by J. K. Simmons. 
Tenzin's father, Aang, was the Avatar before Korra and kept world peace by preventing the Fire Nation from destroying the Earth Kingdom during the 100-year war. Tenzin’s mother is Katara. Tenzin is the youngest of the three children of Aang and Katara.