Question: Who is a fictional character in Nickelodeon's animated television series "" and "The Legend of Korra", greatly aided the previous avatar, Aang, in his efforts to save the Earth Kingdom from destruction?
Sentence (from "Tenzin (The Legend of Korra)"): The character and the series, a sequel to "", were created by Michael Dante DiMartino and Bryan Konietzko.
Relevant evidence: No