Sokka

Sokka was a Water Tribe warrior, raised by his grandmother Kanna along with his younger sister Katara in the Southern Water Tribe. Sokka was the son of Kya and Chief Hakoda. Hakoda left along with all of the other men in his tribe to fight the Fire Nation when Sokka was a young boy. As there were no other teenage boys in the tribe, Sokka was the oldest male in the South Pole, and left leader of the tribe. He assumed responsibility for the tribe, until his sister discovered an Air Nomad named Aang frozen in a block of ice. When he learned that Aang was the Avatar, he was at first skeptical that a child could really save the world. As he and his sister helped Aang on his quest, he began to believe that Aang really was the only hope for peace in the world.

Abilities
Sokka had come to learn the art of swordsmanship, wielding a Jian sword, and had improved his contribution to the team. Under the tutelage of the Fire Nation swordmaster Piandao, Sokka underwent various activities, including sparring matches with the butler Fat to hone his swordwielding skills and arts such as painting, calligraphy, and rock gardening to sharpen his mind. Eventually, when instructed to make his own sword, he used fragments of a meteorite that fell the night before to collect the metal needed to forge his blade. Sokka's sword, like his master's, was patterned on a Qing Dynasty jian, but had the properties of the alien material used for its creation, making it unique. The blade retained an unusual all-black appearance and was able to slice through the toughest materials, such as steel. Although Sokka proved unable to defeat his master in a duel, Piandao stated that Sokka possessed the traits that one day could make him an even greater swordsman than he was. During the passing of Sozin's Comet, Sokka was once again able to prove his proficient skills in fighting.[ Even after breaking his leg from a fall and holding onto Toph who was about to fall to her death, he managed to take out two Firebenders that were about to finish him off. He defeated them by drawing his boomerang and throwing it at the first Firebender and knocking him out, then kicking his sword into the air, catching it, then throwing it to slice through the platform the other Firebender was standing on. He unfortunately lost both items in the process, only for a group of Firebenders to appear. Luckily, he and Toph survived when Suki crashed another airship into the one they were on and they managed to safely drop onto it. Sokka showed his incredible intellectual potential, capacity to learn, and critical thinking skills throughout the series. He absorbed information quickly and completely and solved problems at an alarming rate. An example of this can be seen when he solved the dilemma of the hot air balloon, which stumped even an engineering genius, shortly after having the concept explained to him. More examples were present in his training with Piandao. Sokka became an advanced swordsman rapidly, besting Piandao's servant, Fat, in just a couple of days. He also managed to gain a firm grasp on blacksmithing in that short time, as he forged his own sword and later a suit of armor for Appa. His unique critical thinking ability came into play often through the training exercises of Piandao. He "stamped his identity" on a page by applying ink to his face and rolling it across the paper after he was informed that he got a little of it on him while thinking. During the rock gardening exercise, he "manipulated the terrain to his advantage" by rolling boulders and relocating moss to make a sort of lounge chair in the shade, thus appealing to his love of relaxation.