Since I haven't read this particular fanfiction, I can't say for sure. But it could be the'son of suns' character as the main protagonist, and perhaps some classic Star Wars characters like Jedi knights or Sith lords who interact with him.
There's no way to know exactly without reading it. However, it's likely that the main character is the 'son of suns' himself. He might be joined by other original characters created for the fanfiction, or maybe well - known Star Wars characters such as Han Solo or Princess Leia could make an appearance. They could either be allies or antagonists to the'son of suns' depending on the plot of the fanfiction.
I'm not sure specifically as there could be many different 'son of suns' Star Wars fanfictions. It might be about a character who is the son of someone important, perhaps related to a powerful or significant 'sun' - like symbol or entity in the Star Wars universe.
Obviously, the son of Abeloth would be a main character. There might also be some Jedi or Sith characters who interact with him.
The Son of Abeloth is the central figure. Alongside him, there could be an old and wise Jedi Master who senses the potential in the Son of Abeloth, either for great good or great evil. There might also be a Sith apprentice who sees the Son of Abeloth as a threat or a tool for his own rise to power. And don't forget about the smugglers or bounty hunters who might get caught up in the events surrounding the Son of Abeloth, either by accident or for a hefty reward.
In the fanfiction, Shmi could be the key to unlocking a hidden prophecy about Anakin. Maybe there were ancient texts on Tatooine that only she could understand, and these texts revealed the true nature of Anakin as the 'Son of Suns' and his role in the galaxy. She then has to find a way to pass this knowledge on to the right people before it's too late.
I'm not certain, but it might feature a character who has some connection to the shadows, like a Force - user who can manipulate shadows. There could also be an ordinary person who gets caught up in events related to this shadowy aspect of the story.
Well, Archer himself is obviously a main character. He could be a new character inserted into the Star Wars universe. And often, characters like Luke Skywalker or Princess Leia might also be main characters. They could interact with Archer, for example, Luke might be intrigued by Archer's different fighting style and try to incorporate some of it into his Jedi training.
The main characters are typically the rookie Clone Troopers. They are new to the war and still learning the ropes.
It could be a previously unknown son of Luke Skywalker. Maybe he was hidden away for some reason and now he's lost in the galaxy, trying to find his father or his place among the Jedi.
Another common type of main character could be a healer. In a world full of death and darkness, a healer is essential. They use their powers to keep the other characters alive during their battles and quests. Their presence gives a sense of hope among all the doom and gloom.
A fanfiction could also be about Shmi's dreams and hopes for Anakin. It could show her thoughts as she watched him grow, knowing he was special. For example, she might have had visions of his future in the Jedi Order and the great things he could do, but also feared for him because of the dark side she sensed was a threat.