Short answers, pulled from the story.
Avatar: The Last Airbender was created by Michael Dante DiMartino and Bryan Konietzko, who met as students at the Rhode Island School of Design in 1995. They developed the concept after Bryan Konietzko's work on Invader Zim was canceled in January 2002, pitching it successfully to Nickelodeon's head of development Eric Coleman.
Avatar: The Last Airbender first aired on Nickelodeon on the 21st of February 2005, and concluded on the 19th of July 2008. The series consists of 61 episodes across three seasons, each called a "book": Water, Earth, and Fire.
Avatar: The Last Airbender won five Annie Awards, a Genesis Award, a Primetime Emmy Award for Outstanding Animated Program for the episode "City of Walls and Secrets", a Kids' Choice Award, and a Peabody Award. TV Guide named it among its 60 greatest cartoons of all time in 2013.
Each bending discipline is rooted in a distinct Chinese martial art, developed with guidance from Sifu Kisu of the Harmonious Fist Chinese Athletic Association. Waterbending draws from tai chi, earthbending from Hung Gar, firebending from Northern Shaolin, and airbending from Baguazhang. Toph's unique style uses Chu Gar Southern Praying Mantis.
After becoming available in the United States on the 15th of May 2020, Avatar: The Last Airbender reached number one on Netflix four days after release. It held a spot in the platform's daily top ten for a record 60 consecutive days and became the most-streamed children's series on Netflix for the year.
The 2010 live-action film The Last Airbender, directed by M. Night Shyamalan, received a 5% approval rating on Rotten Tomatoes and won five Razzies including Worst Picture. A Netflix live-action series premiered on the 22nd of February 2024 without original creators DiMartino and Konietzko, who departed in August 2020 over creative differences; Netflix renewed it for two additional seasons in March 2024.