Sokka is a fictional character voiced by Jack DeSena in the Nickelodeon animated television series . The fifteen-year-old is a warrior of the Southern Water Tribe who, along with his younger sister Katara, discovers Aang, the long-lost Avatar, and accompanies him on his quest to defeat the Fire Nation and bring peace to the war-torn nations. Concept and creation It is provided in the Avatar Nick Mag Presents: First Edition issue by co-creators Michael Dante DiMartino and Bryan Konietzko that So… (More on Sokka)