'The Chase' follows the Gaang after recently welcoming their newest member, Toph, to the group. Though technically introduced to the Gaang in 'Return to Omashu,' 'The Chase' is where Azula and her team become a force to be reckoned with. Heroic tales are only as good as their villains, and the greatest villain of Avatar: The Last Airbender gets a hell of an introduction in 'The Chase.' I'm speaking of course, of Azula, the Fire Nation princess and resident sociopath whose ruthless maneuverings and chilling charisma help her surpass even the show's ultimate Big Bad, Fire Lord Ozai.