Toph would be an important character. Her earth - bending skills and no - nonsense attitude would be valuable in the post - war world. She could help with rebuilding efforts, especially in the Earth Kingdom. Sokka, with his strategic mind, would be another likely main character. He could be involved in diplomatic negotiations and helping to plan for the future security of the nations. And of course, there could be new characters introduced who are the children or students of the original heroes, bringing in a new generation's perspective.
The main characters are likely to include Aang, who will be at the center of any attempts to keep the peace. Zuko, who has the huge task of reforming the Fire Nation. Katara, who could use her waterbending and her wisdom to heal the wounds of the war, both physically and emotionally. Then there's Sokka, whose intelligence and creativity will be needed to solve the various problems that arise in the post - war world. Also, Appa and Momo will probably be around, adding a bit of their own charm to the story as Aang's loyal companions in this new phase of their lives.
One idea could be the emergence of new villains or threats that are not directly related to the previous war. These could be dark forces that were awakened or created due to the chaos of the war. The heroes would then have to come together again, but this time in a different context, where they have to use their post - war experiences and new - found unity to face these threats.
Katara is another important character. She is a waterbender from the Southern Water Tribe. She is brave and often serves as a moral compass for the group. She also helps Aang in his waterbending training.
One possible plotline could be about the rebuilding efforts. The different nations might come together to reconstruct the areas damaged during the war. They could share their unique skills and resources. For example, the Earth Kingdom could use its earthbending to reshape the land, while the Water Tribes could help with providing clean water sources. Another plotline could focus on the characters' personal growth. Aang might struggle with his role as the Avatar in peacetime, having to deal with political issues rather than just fighting. Zuko could face challenges in ruling the Fire Nation and trying to change its old ways completely.
Aang is a main character. He's the last airbender and the Avatar, who has to master all four elements to bring balance to the world. Katara, a waterbender from the Southern Water Tribe, is another important character. She helps Aang on his journey. And Zuko, the banished prince of the Fire Nation, is also a key figure as his story of redemption is a major part of the plot.
Aang is still a central character. He's the Avatar and has to keep the balance in the world. His journey of mastering all four elements continues in the graphic novels.
Aang is one of the main characters. He's the Avatar. Katara and Sokka are also important. There's Zuko too.
It's hard to say for sure without reading it, but likely Aang would still be a main character. He might be older and facing new challenges. Katara could also be a main character, perhaps with her waterbending skills being even more refined. Zuko too, as he continues to deal with the Fire Nation's future.
Katara and Sokka are also main characters. Katara is a powerful waterbender and Sokka is the strategic thinker. Their roles in different situations and how they contribute to the overall story would be in these short stories.
In the 'Avatar The Last Airbender Avatar Kyoshi Novel', Kyoshi is the central character. She is the one with the Avatar powers and the one on a journey of growth. Then there's Yun. He is a character who has his own story arc that intersects with Kyoshi's in interesting ways. And Hei - Ran, an important figure in Kyoshi's life, who imparts wisdom and training to her.