Avatar: The Last Airbender (2005)

In a war-torn world of elemental magic, a young boy reawakens to undertake a dangerous mystic quest to fulfill his destiny as the Avatar, and bring peace to the world. Four elemental nations are at war with each other and only the Avatar, master of all four elements, can restore peace. The new Avatar comes in the form of Aang who strives to fulfil his destiny. Avatar aired on Nickelodeon for three seasons, from February 2005 to July 2008.