Talk:Avatar/@comment-1378599-20120429094622/@comment-4991675-20120501005235

Aang didn't master all the elements at 12. In the first part of Sozin's Comet, Zuko said Aang hasn't mastered firebending yet, and Toph replied and said "and not to mention your earthbending could use a little work too." if anything, he only mastered air and water