Well, Celestia for sure. She is likely to be the character that drives the story forward in terms of her actions and decisions regarding the Reapers. The Reapers themselves are likely to be a group or a single entity represented as the main opposing force or the ones that Celestia is interacting with. And there could be a sidekick or an advisor type of character for Celestia, who gives her advice on how to deal with the Reapers.
Celestia, being a key figure in her own realm, would play a major role. The Reapers, as the mysterious and often feared entities, would also be central. Depending on the fanfic's take, there could be a character who acts as a mediator between Celestia and the Reapers, perhaps someone who has knowledge of both their worlds and tries to bridge the gap between them.
Well, it could be about an epic encounter between Celestia and the Reapers. Maybe they start off as enemies and gradually find common ground. For example, they might face a greater threat together that forces them to cooperate.
I'm not sure specifically as it depends on the fanfic. But it could be the leaders of the alliance, perhaps a human general or an alien diplomat.
The main character is Temple. She is a strong - willed girl who is trying to survive in the post - apocalyptic world.
I'm not entirely sure without reading it more closely, but often in zombie novels there's a strong, resourceful protagonist. Maybe there's someone like that in this novel who leads the fight against the zombies.
Well, obviously Batman and Nightwing are the main characters. Batman, the dark and brooding protector of Gotham, with his vast array of gadgets and skills. And Nightwing, the acrobatic and more light - hearted hero who was once Robin.
Obviously, Harry and the Grangers are the main characters. Harry is the famous wizard from the 'Harry Potter' series, and the Grangers are Hermione's parents, who are Muggles.
Obviously, Bella and the Cullens are the main characters. Bella is the human who enters the world of the Cullens. And the Cullens include Edward, who has his own complex personality and abilities as a vampire. Then there's Alice, who might be able to see the future and plays an important role in Bella's interactions with the family.
Sometimes, other characters from the Percy Jackson universe might also make an appearance. For example, Annabeth could be involved. She is Percy's girlfriend and is very intelligent. Her presence could add an interesting dynamic, like she could be the voice of reason when Percy and Poseidon are at odds. Or Grover, Percy's satyr friend, might be there to provide some comical relief and also offer his own insights based on his knowledge of the mythological world.
Obviously, Arthur and a human are the main characters.
Another character that could be important is Jiraiya. Since he was Minato's teacher and Naruto's mentor, he could play a role in the fanfic. Maybe he helps facilitate the meeting between Minato and Naruto, or he has some words of wisdom for both of them during their time together.