Tenzin

Tenzin is the son of Aang and Katara. He is knowledgeable in Airbending, likely being a master Airbender, and the new Avatar Korra is searching for him in order to learn Airbending from him. Not much else is known about him.

Confirmed Facts

 * He is the son of Aang and Katara.


 * He is in Republic City.


 * He is an Airbender.
 * He is or will be Korra's Airbending teacher.

Rumors & Speculation
These storyline elements remain unconfirmed.
 * In theory, Korra is the spiritual parent of Tenzin seeing as she is the new Avatar and because Korra was Aang in her previous life. This kind of relationship would be similar to the relationship between Zuko, Azula, and Avatar Roku.
 * It can be presumed that following Tenzin's birth, Aang was no longer the last Airbender while he was alive.
 * It is currently unclear if Tenzin will be the only living Airbender in Avatar: Legend of Korra. He is so far the only one who has been confirmed. However, the possibility of Aang and Katara's having other descendants, also potential Airbenders, has not been ruled out.
 * The marrying age in the Avatar World, at least within the Water Tribe, is 16 (presumably for both parties). Thus as the Legend of Korra is set 75 years after Avatar: The Last Airbender, with Aang having died sometime between 156 and 159 ASC, Tenzin's maximum possible age is either 71 or 72.
 * Tenzin being 71 at the oldest seems more likely because Aang was only 12 years old (biologically) at the start of The Last Airbender and only 9 months worth of time is clearly shown to have passed during the series, as both solstices occur within the series.
 * Tenzin's minimum age is much harder to estimate but the lowest estimate that seems plausible is 41.
 * However, this would mean Katara would have given birth to him at the age of 51, which is the average age most women in the western world start menopause. Thus it is likely that he is older.
 * He may know relatives of Aang's friends.

Trivia

 * Tenzin is the first canonical interracial child ever mentioned in the series.
 * Tenzin's name could possibly come from 14th Dalai Lama, Tenzin Gyatso, also the inspiration for the name of Monk Gyatso. Furthermore, Monk Gyatso's full name might have been Tenzin Gyatso, which makes it possible that Tenzin is named after Aang's beloved mentor, guardian and father figure.