A possible plot twist is that the wildlings, who were allied with Jon Snow, turn on him during the battle. This could be due to some misinformation spread by Ramsay's men. They might think that Jon has betrayed them in some way. This would put Jon in a very difficult position as he would be fighting not only Ramsay's forces but also his former allies. It would also create a very different dynamic in the battle compared to what we saw in the show.
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.
One possible plot idea could be that Cersei's bastards grow up in secret and form an alliance to take revenge on those who wronged their mother. They might use their wits and hidden identities to manipulate the power dynamics in King's Landing.
A possible plot twist could be that the dragons in Game of Thrones are actually the result of some ancient ninja jutsu from Naruto's world. Maybe a long - ago ninja experimented with a powerful jutsu that created these creatures. Another twist could be that Jon Snow has some hidden ninja blood in him, which gives him unexpected powers and abilities that no one in Westeros has ever seen before.
Well, perhaps a plot twist where the White Walkers are not the ultimate villains. Maybe they are being controlled by a more powerful and hidden force within Westeros. This would turn the whole 'fight against the White Walkers' narrative on its head. Also, a character like Tyrion Lannister could discover he has some sort of magical ability that has been dormant all his life, which would add a whole new layer to his character and his role in the story.
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.
One interesting plotline could be a bastard of Robert's rising to power in a unexpected way. Maybe he uses his knowledge of the Baratheon family secrets to gain influence. For example, he could expose some hidden affairs or deals that the main families were involved in, which would shake the power dynamics in Westeros.
Another plot could involve a battle where the wildlings and the Night's Watch team up against a new, unexpected threat from beyond the Wall. This threat could be a powerful sorcerer who has the ability to raise the dead in a more terrifying way than the White Walkers ever did. They would have to put aside their differences and fight together, which would be full of internal conflicts and drama.
One interesting plot twist could be that a previously unknown witness emerges with evidence that completely exonerates Tyrion. Maybe it's a servant who saw the real culprit all along but was too afraid to speak up until the trial.
A really interesting plot twist might be if Arya discovers that her pregnancy is part of a political plot against her or her family. This would force her to use her skills and wits to protect herself and her unborn child, similar to how she had to survive in the original series. It could also lead to her reuniting with long - lost family members or making new alliances. Well, in this fanfiction, she would have to navigate through a whole new set of challenges with the added responsibility of a pregnancy. She might even have to pretend to be someone else to keep her pregnancy a secret from her enemies. This would be a great way to see her character develop further in a different context.
A great plot twist in such fanfiction could be that there is a hidden underground society in Westeros that has been secretly developing modern technology all along. When they finally reveal themselves, they use things like laser weapons to take over King's Landing. Also, what if Bran Stark's warging ability could be enhanced by a neural - link technology? He could control multiple animals or even people at the same time, which would give him an incredible amount of power and change the balance of power in the story.
In some 'Game of Thrones Do Over' fanfictions, Daenerys might form an alliance with the Starks much earlier. Instead of sailing to Westeros alone and facing challenges on her own, she teams up with them. This would create a powerful force against the Lannisters and other enemies, and also change the relationships between the different houses in unexpected ways.