Often, the main characters from the original Avatar series like Aang, Katara, and Zuko are still central in 'Ashes to Ashes' fanfiction. Their growth and new adventures are explored further.
Often, there is the phoenix itself, which can be depicted as a majestic and powerful being. There might also be a young hero or heroine who discovers the phoenix ashes and is thrust into an adventure.
Well, in 'Ashes to Ashes' Avatar fanfiction, a great concept could be the exploration of the spiritual side of the Avatar world in more depth. Maybe there are stories about spirits that we haven't seen much in the original series. Also, it could be about the characters dealing with the aftermath of the main events in the series, like how they rebuild their lives and communities.
I'm not entirely sure as it can vary depending on the specific fanfiction. But often, it could be the protagonist who has a strong connection to the past events that are being explored.
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.
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.
The main characters could vary greatly depending on the specific fanfiction. It might be an original character created by the author who is on a quest to rebuild a shattered world. For example, a young hero with a mysterious past that holds the key to rising above the ashes.
A young orphan could be the main character. They are living on the streets in a world filled with the 'ashes' of a past war. They are trying to survive and figure out what really happened that made everyone 'fall down'.
Well, it often depends on the individual writer's focus, but some of the main characters from the original 'among the ashes' are likely to be popular. They might be presented in new lights, with different traits emphasized. For example, the protagonist could be given more heroic or more flawed qualities, depending on the writer's vision.
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.