In 'The Secret Water Story', it's possible that there is an old wise figure who has some knowledge about the secret water but doesn't reveal it easily. There could also be a villain - like character who wants to use the secret water for his own bad purposes, like to gain power or wealth. And then there are the protagonists, perhaps a family or a team of explorers, who are trying to protect the secret water from this villain and also uncover the truth and beauty of this mysterious water source.
I don't know for sure since I haven't read the story, but there could be an adventurous young person.
The most obvious main character is the water mitty. Since the story is about its secret life, it will be the one the story revolves around. However, depending on the story, there could be other supporting characters like other small water creatures that interact with the water mitty, or perhaps elements of the water environment that could be considered as characters in a sense, like a big rock or a water current that affects the water mitty's life.
Well, Nadia is surely a main character as the title features her name. There might be a male lead character as well, who could be a partner or a guide to Nadia. And there may be some antagonists, perhaps people or creatures who are trying to keep the secret of the blue water from being discovered. There could also be some wise old characters, like a mentor figure, who gives Nadia and her companions advice along the way.
In many short stories with a theme like 'A Secret Lost in the Water', there is often a central character who is curious and determined to solve the mystery. This character may be an outsider to the area where the water is located. There could also be a character who has lived near the water all their life and has some superstitions or beliefs about the lost secret. And perhaps there is a love interest who either encourages or discourages the main character from continuing the search for the secret in the water.
As there is no information given about this story, it's impossible to say who the main characters are. They could be ordinary people with an extraordinary secret, or they could be fictional characters created for a specific plot.
Given the lack of context regarding the 'bastos secret secret story', we can only speculate about the main characters. If Bastos is a person, perhaps they are the central figure, and there could be friends, family members, or foes around them that are part of the story. Maybe there are also some mysterious figures that help or hinder Bastos in the discovery or protection of the secrets in the story.
Typically in such a story, there might be a protagonist, perhaps a young and brave person who is determined to find the water of life. There could also be an antagonist, like a villain who wants to stop the hero from getting the water for their own evil purposes. And there may be some wise elders or magical creatures that guide or hinder the main character during their journey.
Since I don't know the specific 'dark water story', I can't say for sure. It could be a lone sailor, a group of scientists studying the dark water, or perhaps a family living near the water.
I'm not sure who the main characters are without more information. It could be scientists who are studying water, or perhaps local communities that are involved in water conservation.
The most obvious important character is the one who held the secret originally. Although we may not know much about this person directly, they are central to the story because everything revolves around the secret they had. Then there are the family members like the father who are on the periphery of this secret, affected by it and also contributing to the mystery surrounding it. Their interactions and relationships are what build up the story.
I'm not certain. But usually in such novels, there would be a protagonist who is likely to be closely associated with the events related to the water. Maybe a detective or someone with a personal connection to the water - related mystery.