Since we have no prior knowledge about this specific novel, we can only assume. Given the title 'the last avatar novel', it's reasonable to think that the main character is the last avatar. They could be a hero or an anti - hero. They might start the story with certain weaknesses that they need to overcome during their journey. There could be other characters around them that either help or hinder their progress. But ultimately, the story would revolve around the actions and decisions of this last avatar.
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.
Aang is one of the main characters. He's the Avatar. Katara and Sokka are also important. There's Zuko too.
The main themes in this novel include self - discovery. Kyoshi has to discover her true self and her place in the world. Legacy is also a theme. Since she is an Avatar, she has to think about the legacy she will leave behind. Additionally, there is the theme of facing challenges. Kyoshi faces numerous challenges, both physical and emotional, and how she overcomes them is a big part of the story.
In some cases, secondary characters from the original series could be promoted to main characters in the fanfic. For example, Toph's earthbending students could take on more prominent roles and drive the story forward with their own adventures and challenges.
In 'avatar the last air bender complete novel', Aang is the central figure as the Avatar. Katara is crucial as she helps Aang in his journey and is a powerful waterbender. Sokka provides the non - bender perspective and his strategic thinking. Zuko is a key character whose arc of redemption is quite interesting. He starts as an antagonist but evolves. Toph is also a main character with her strong earthbending skills and unique personality. Other characters like Iroh also play important roles in the story.
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.
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.
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.