I don't know as I haven't read the novel, but I assume there would be Alpha as a main character. There might also be characters who are either friends or foes to Alpha during his or her journey.
I'm not sure as I haven't read it specifically. But generally, it might be about a character named Alpha who rises from a difficult or ruined situation, like perhaps a post - apocalyptic world or a personal downfall.
There might also be some secondary characters from the Marvel universe that play significant roles. For example, Nick Fury could be involved in guiding the Avengers as they try to rise again. Or characters like Doctor Strange might make an appearance to offer his magical expertise in helping the Avengers rebuild and face whatever threats are out there.
Often, there will be an antagonist or a group of antagonists as well. They could be those who oppose the rebuilding of the empire for their own reasons, such as wanting to keep the power structure as it is in the post - empire chaos or having a grudge against the old empire. These antagonists add conflict and drama to the story.
I don't know specifically as I haven't read this fanfiction. But if it's related to 'Star Wars Rebels' (assuming SWR stands for that), it could have characters like Ezra Bridger, Kanan Jarrus, Hera Syndulla etc. as main characters if the story follows the general themes of the show.
I'm not sure specifically as I haven't read or seen it yet. But usually in a story based on true events, the main characters could be the people directly affected by the situation at the center of the story, like the victims of a catastrophe or the ones leading the recovery.
Since it's a fanfiction, it probably still features Harry Potter as one of the main characters. He is the central figure in most Harry Potter - related stories. Hermione Granger might also be a main character, as she is Harry's close friend and often plays an important role in the story's progression. Ron Weasley could be another main character, especially if the fanfiction focuses on their trio friendship.
Since it's a Naruto fanfiction, Naruto himself is likely to be one of the main characters. But it could also have other important characters like Sasuke, Sakura, Kakashi, etc. depending on how the story is crafted. Maybe there are also some original characters created by the fanfiction author.
I don't know the main characters in this novel as I haven't read it. But they could be two lovers, perhaps named something romantic like Lily and James.
I'm not sure specifically as I haven't read the novel. But generally, in a novel with such a title, there could be a protagonist who is perhaps a survivor. Maybe someone who has witnessed the destruction represented by the 'ashes' and is trying to make a new start, which is somehow related to the'red' concept.
Since I haven't read it, I can't say for sure. But there's probably an alpha character as the name suggests. There might also be characters who oppose the alpha or characters who are part of the alpha's group or journey.