Avatar: The Last Airbender (season 1)
Season One (Book 1: Water) of Avatar: The Last Airbender had 20 episodes and they were shown from 21 February 2005 until 2 December 2005. The series was created by Michael Dante DiMartino and Bryan Konietzko, and starred Zach Tyler Eisen, Mae Whitman, Jack DeSena, Mako, Dante Basco, and Jason Isaacs as the main character voices.