The Show's Creators: Michael Dante DiMartino and Bryan Konietzko
Michael Dante DiMartino and Bryan Konietzko started working on Avatar The Last Airbender in the spring of 2001 while working at Nickelodeon Animation Studios in Burbank, California. It all began when Konietzko re-imagined an old sketch of his. He turned a balding, middle-aged man character into a child. Then, he drew his brand-new character herding bison in the sky and showed his sketch to Mike DiMartino. At the time, DiMartino had been studying a documentary about the South Pole. The two got working on a story concept and then two weeks later, the two pitched their idea to Nickelodeon’s VP and executive producer Eric Coleman. The rest is history.
Source: https://avatar.fandom.com/wiki/Avatar:_The_Last_Airbender
About Michael Dante DiMartino
Michael Dante DiMartino (born July 18, 1974) is an American animation director and author from Shelburne, Vermont. He is most well known for his work as co-creator, executive producer, and story editor of the animated Nickelodeon TV series Avatar: The Last Airbender. Before Avatar, DiMartino assisted in directing other animated shows like King of the Hill, Family Guy, and Mission Hill.
Source: https://en.wikipedia.org/wiki/Michael_Dante_DiMartino
About Bryan Konietzko
Bryan Joseph Konietzko is an American animation director, writer, producer, and musician. He is most well known for his work as co-creator and executive producer of the animated Nickelodeon TV series Avatar: The Last Airbender. Before Avatar, Konietzko was a character designer for Family Guy as well as an assistant director for shows Mission Hill and King of the Hill. He was also a storyboard artist and art director for another Nickelodeon show, Invader Zim.