Background Of Avatar

Avatar: The Last Airbender is co-created/produced by Michael Dante DiMartino and Bryan Konietzko at Nickelodeon Animation Studios in Burbank, California.

According to co-creator Bryan Konietzko, the concept of the program was initially conceived in Spring 2002, when he took an old sketch of his—a balding, middle-aged man—and turned the character into a child. Bryan then did a drawing in which the boy was shepherding bison through the sky. At the time, Mike DiMartino was studying a documentary about explorers who were trapped in the South Pole. The various aspects all seemed to gradually come together. The two thought:

There's an air guy along with these water people trapped in a snowy wasteland... and maybe some fire people are pressing down on them...

—Michael Dante DiMartino and Bryan Konietzko,
The co-creators proceeded to successfully pitch the idea to Nickelodeon VP and executive producer Eric Coleman just two weeks later.

While it was originally set to premiere in November 2004, the first episode of Avatar aired in February 2005. Following the conclusion of the first season of Avatar, Nickelodeon promptly ordered a second twenty-episode season that premiered on March 17, 2006, and concluded on December 1.The third season began on September 21, 2007 and reportedly will go on to feature twenty-one episodes rather than the usual twenty