Tim Hedrick, Josh Hamilton & John O'Bryan The Day of Black Sun Part 1 The Invasion Main page: List of Avatar: The Last Airbender episodes Episode's number The season, and especially the finale, received much critical acclaim, with praises from sources such as DVD Talk and IGN.

Season Three received a similar positive critic to that of the previous seasons. The season finale consisted of the four episodes showed together as a two-hour television movie. The final season features 21 episodes, one more than the previous two seasons. Former antagonist and anti-hero Zuko changes sides and joins Aang, serving as his Firebending teacher until the season finale, when Aang finally defeats the Fire Lord and ends the war. Midway through the season, Aang gathers friends he met in previous episodes and leads a failed invasion into the Fire Nation. In the season's beginning, protagonist Aang and his friends Sokka, Katara, and Toph are traveling through the Fire Nation, conjuring a plan for invading the Fire Nation and looking for a teacher to teach Aang Firebending.

This third and final season focuses on Aang's quest to defeat the tyrannical Fire Lord Ozai. The season was created by Michael Dante DiMartino and Bryan Konietzko, and it starred Zach Tyler Eisen, Mae Whitman, Jack DeSena, Jessie Flower, Dante Basco, and Grey DeLisle as character voices. Season Three ( Book 3: Fire) of Avatar: The Last Airbender, an American animated television series on Nickelodeon, first showed its 21 episodes on television from 21 September, 2007 to 19 July, 2008. List of Avatar: The Last Airbender episodes

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