Aang

Avatar Aang is the titular main protagonist of the Nickelodeon cartoon series Avatar: The Last Airbender, as well as a posthumous character in The Legend of Korra.

Aang was a mischievous youth from the Air Temples. Amazingly, he mastered air-bending at a very young age; a sign that he was, indeed, the Avatar. When the monks of the Air Temples reveal to Aang that he is the Avatar, Aang reacts in a confused manner. Believing that Monk Gyatso, Aang's personal mentor and father-figure, would hinder Aang's training, they decided to send Aang away to the Eastern Air Temple to receive proper training. Aang refuses to accept his destiny as the Avatar, believing it will tear him away from Monk Gyatso, and runs away with his sky bison, Appa. However, he is caught up in a terrible storm, and gets knocked deep underwater with his bison. Unconsciously entering the Avatar state, he water-bends, freezing Appa, and himself, to save them from drowning. 100 years later, he is discovered by two Water Tribe residents, Katara, and Sokka. Later Katara became Aang's waterbending teacher despite the fact that he was originally quite better than her. When the three of them arrived at the Nothern Water Tribe Aang's teacher became master Pakku. After the Seige of the Tribe, Katara became his waterbending master again. In a search for an earthbending teacher Aang met his earthbending teacher Toph Beifong. With Katara and Toph teaching him all the time he became a great master of earthbending and waterbending. He even became better than his teachers. After the fall of Ba Sing Se and the failure in the Day of The Black sun, Zuko, Aang's former enemy, became his firebending teacher and after a lot of training Aang became a firebending master a few days before his battle with Fire Lord Ozai. Finding himself on a strange island, Aang is reluctant to actually kill Fire Lord Ozai, despite his four previous past lives convincing him it is the only way. But upon learning that he was actually on the back of a Lion Turtle, one of four that made the first benders by manipulating humans' chi, Aang receives the Lion Turtles' Energybending. Ozai slams Aang into a rock, hitting the scar on his back from Azula's lightning in the previous season and inadvertently releasing his locked seventh chakra, allowing Aang to enter the Avatar State. With the combined power of his past lives, Aang quickly overwhelms Ozai but refuses to kill him. After subduing Ozai, Aang finally understands the lion-turtle's meaning and uses energybending to strip Ozai of his Firebending powers, removing his ability to wage war while Sozin's Comet vanishes beyond the horizon. During his coronation, Zuko promises to aid the world in the postwar reconstruction. A final scene depicts the main cast gathered in Iroh's new tea shop, while Aang and Katara finally begin a romantic relationship.

Being frozen in an iceberg for 100 years while in the Avatar State drained much of Aang's life energy. While he did not feel the effects for many years, after he entered middle age in his 50s, the strain of this exertion increasingly weighed upon his body. Ultimately, it resulted in Aang dying at the relatively young biological age of 66, in 153 AG. Aang was survived by his wife, Katara, and his three children, but he did not live to see his grandchildren, all of whom would become powerful Airbenders. Prior to his death, Aang tasked the Order of the White Lotus with finding and guiding the new Avatar after him. When Aang died, the Avatar spirit reincarnated into Korra of the Southern Water Tribe. Aang intended for the Order to simply guide and guard Korra, but several mishaps in the aftermath of Aang's death and the still-fragile state of relations between the now-Five Nations resulted in Katara and Tenzin sequestering Korra in a compound at the South Pole, bringing teachers to her instead of allowing her to seek out her own.

In the Legacy of Chris Thorndyke,

And in the present, he is reprised by DB Sweeney in the English dub and will be voiced by Takeshi Kusao in the Japanese dub.

And in the past, he is reprised by Jaxson McBride in the English dub and Asuka Nakase in the Japanese dub.