Jon Snow is always a memorable character in Battle of the Bastards fanfiction. His leadership and determination are often central to the stories. He is the one leading the fight against Ramsay Bolton, and his actions and decisions drive the plot forward. Another is Ramsay Bolton himself. His cruelty and cunning make him a very interesting character. In fanfiction, his devious plans and his attempts to outwit Jon are often explored in more detail.
Another great one is 'Beyond the Battle of the Bastards'. It continues the story after the battle, exploring what might have happened to the various factions and characters in the following days and weeks, with some interesting plot twists.
In some fanfictions, a plot twist might be that a long - lost relative of Jon Snow shows up during the Battle of the Bastards. This relative could have a powerful army or some unique ability that changes the course of the battle completely. For example, if it was a Targaryen relative who had a dragon egg that hatched during the battle. The sudden appearance of a dragon would completely disrupt the battle and give Jon's side an unexpected advantage.
You can try Archive of Our Own (AO3). It has a vast collection of fanfictions from various fandoms, including many great ones related to 'Battle of the Bastards'. Just search for the relevant tags and you'll be presented with a lot of options.
Well, first of all, make sure you have a reliable source for the fanfiction. You don't want to be exposed to any malicious or untrustworthy sites. Also, it's important to respect the original work and the efforts of the fanfic writers. Try to understand the storylines and characters within the context of the Battle 360 universe.
I'm not entirely sure specifically as it could be about many things. It might be a fanfiction centered around a female character who is considered a 'bastard' in the context of the story's world, perhaps dealing with her journey, her relationships, or her struggle for acceptance.
One common theme is exploring the backstories of the characters in more depth. For example, delving into the past of Beerus and his relationship with the other deities.
Another theme is sacrifice. There are often stories that explore the sacrifices made by various characters, like Lupin and Tonks. Also, friendship is a big theme. The fanfiction might show how the friendships between the characters are strengthened or tested during the battle. For instance, Harry, Ron, and Hermione's bond might be depicted in different ways. And of course, the fight between good and evil is always a central theme, with the Battle of Hogwarts being a major showdown between the two forces.
Without having read the 'bastards girl fanfiction', we can only guess. The main character is likely the girl who is identified as a 'bastard'. She may be accompanied by a cast of other characters. There could be a group of outcasts like her who form a kind of surrogate family. There might also be antagonists, perhaps those who uphold the social norms that marginalize her. And then there could be characters who are initially indifferent to her but later become important in her journey, like a kind - hearted noble who starts to see her worth beyond her 'bastard' status.