Avatar The Last Airbender has no analogue TV Show. In this masterpiece blends the two styles, anime and cartoon, that's why this TV Show is called anime-cartoon. However, in any way it is not anime TV show. Actually, after review of all 60 series (lasting a little less than half hour) you can be led to image that is a more cartoon, but of course there you can find and anime elements.
All the action revolves around a major character Avatar - the Aang. His mission was to save the world from the tyranny of the Fire Nation. Aang was a twelve-year-old boy, who in circumstances froze himself and his flying bison Appa in a piece of ice for 100 years (one century). After 100 years when he already was 112, he was freed from the iceberg by Katara the waterbender, and her brother Sokka the warrior. Although Aang was 112 year old, he seemed and he was like the 12 years old boy.