Prehistory
More than a hundred years before the main events of the series, the ruler of the people of fire - the host of the fire Sozin - decided to unleash a war against other nations in order to seize their territories. Knowing that the avatar Rock will prevent him, Sozin first waited for his death. The Avatar was reborn as an air nomad named Aang. Aang learned about his appointment as a child and, frightened of his new responsibilities, left his house on a giant flying buffalo named Appa. Flying over the ocean, they fell into a storm and fell into the water. At that moment, Aang, going into the avatar state, concluded himself and Appa in an iceberg and transferred to a deep anabiosis [9]. In an attempt to kill a new avatar, Sozin completely destroyed the entire tribe of air nomads, unable to reach only Aang, still at that time in the iceberg. After that, the war continued for another hundred years and did not end by the time the main events of the series began. The new master of fire was the grandson of Sozin, Ozai.

Aang (English Aang) - avatar, the only representative of the air nomads, as well as the only surviving mage of the air. His biological age is 12 years, but in fact he is 112, given the period he was in the iceberg. Aang for the invention of a special magical technique in his element was called a master and received tattoos in the form of arrows. He is burdened by the burden of the avatar and wants to be an ordinary child. As pets Aang has a giant flying bison Appa and winged lemur Momo. He is also a vegetarian.

Qatar (English Katara) is a 14-year-old girl from the Southern Water Tribe, the only water mage from her clan, Sokka's sister. He owns the gift of healing and the magic of blood (controlling the fluid inside the bodies of living organisms), which can only be used during the full moon. Qatar promotes the preservation of unity in the avatar team and does everything to warn Aang from the wrong choice. She wears the necklace of her mother, considering him a talisman, giving strength and courage.

Sokka is a 15-year-old warrior of the Southern Water Tribe, brother of Qatar. He does not possess magic and thinks that the main problem of the world is precisely this kind of people's ability. He prefers weapons to magic, especially his boomerang, given to him by his father. Sokka is a skeptic, and believes only what can be seen or touched. In the third season, he learned the technique of sword ownership.
Toph Beifong - a 12-year-old girl from a wealthy family, one of the strongest mages of the earth; Blind from birth, but can "see", feeling vibrations in the earth. Known under the nickname "Blind Bandit". Toph is rude and straightforward, but it is honest and open. She is teaching Aanga the magic of the earth. Also Tof invents the magic of metal.

Zuko (English Zuko) is a 16-year-old fireman, son of the master of fire Ozai, brother of Azula and nephew of Airo. For his misbehavior at the military council, he was summoned to a duel by his own father, where he received a burn around his left eye and was expelled from the country on condition that he return only after the capture or killing of the avatar. At the end of the series Zuko stands on Aang's side and teaches his magic, and also becomes a new master of fire.

Iroh (English Iroh) is an elderly fire mage, Ozai's brother, Uncle Zuko and Azula. He lost his only son at the siege of the city of Ba-Sing-Se and now refers to Zuko as a son. Iroh is smart and has a good sense of humor. Because of the defeat at Ba-Sing-Se was expelled with his nephew. In addition to the technology of lightning, Iro also owns unique magical techniques: fiery breathing and lightning redirection
Azula (English Azula) is a 14-year-old fireman, daughter of Ozai, sister of Zuko and niece of Airo. Clever, arrogant and lying. Has the ability to create a blue flame and a rare magical technique - the emission of lightning