The main characters in the Atlantis story are, first of all, Poseidon. He was deeply involved as he not only founded Atlantis but also had a significant influence on its development. His descendants, like Atlas, played important roles as rulers. The Atlanteans, the people of this fabled land, were a complex group. They were prosperous and technologically advanced. There were probably wise men and warriors among them. And in the context of how we know the story, Plato and the Greeks he was communicating with can also be considered characters in a sense. Because it was through Plato's writing and the Greeks' reception of this story that it has been passed down to us. So, in a way, they are part of the meta - narrative of the Atlantis story.
Ted Brautigan is an important character as well. He has a mysterious quality about him and forms a special bond with Bobby. His presence in Bobby's life has a significant impact on Bobby's understanding of the world and himself.
There might not be a specific set of named characters in every version of 'the legend of atlantis short story'. But often, there are the leaders of Atlantis. They were in charge of this advanced civilization. And there could be seers or wise people who might have foreseen the doom of Atlantis.
The main characters would typically include a leader figure in Atlantis. This person has the responsibility of making decisions for the whole city. They might be facing the challenges of ruling a city with so many different interests. There could also be a group of young characters who are just coming of age and are starting to discover their roles in the city. Their journey of self - discovery and how they contribute to the fate of Atlantis is an important part of the story. For example, one of them might be a talented inventor who comes up with new ways to defend the city or make life better for its people.
Naruto himself is a must - he's the main character of the Naruto series and his unique abilities and personality can drive the story. Also, Sasuke could be included as his rival. In the Atlantis setting, Sasuke might be intrigued by the new powers and knowledge there, and his rivalry with Naruto could play out in different ways.
In the 'Man from Atlantis' novel, if it follows the common tropes, the man from Atlantis is bound to be an interesting character. He would carry the mystery and allure of his origin. There might be characters around him such as a female lead who is both fascinated and sympathetic towards him. And perhaps there are antagonists, maybe from a secret organization, who are eager to extract the secrets of Atlantis from him by any means necessary. There could also be an old wise man who helps the man from Atlantis understand the modern world better.
Most likely, Captain Atlantis is the central character. Besides him, there could be an antagonist, someone who opposes him and his goals. And perhaps there are some wise elders or magical beings that play important roles in the story as well. They could either guide Captain Atlantis or present challenges to him.