Avatar: The Last Airbender (known in Europe as Avatar: The Legend of Aang) is an American animated television series created by Michael Dante DiMartino and Bryan Konietzko that aired for three seasons on Nickelodeon from 2005 to 2008. The series follows the adventures of Aang, a spiritual defender of Earth known as “The Avatar”, and his friends. On 2012, a sequel of the original series, named The Legend of Korra premiered on Nickelodeon, following the adventures of the next Avatar, Korra, and her friends. Because of the franchise’s past success and fame, the show was quickly picked up and became a popular subject on many sites, including Tumblr in many of its blogs.