Well, in some War of the Five Kings fanfiction, a plot twist could be that the war is being secretly manipulated by a group of mages. They are using the chaos of the war to gain power and influence. Also, there might be a plot twist where a peasant uprising occurs that forces the kings to divert their attention from fighting each other. This could change the entire dynamic of the war. Additionally, a character who has been a minor figure throughout the story could suddenly emerge as a key player, perhaps by uncovering a crucial piece of information about one of the kings' weaknesses.
One interesting plot twist could be a character who was thought to be dead returning as a powerful force. For example, a lord who was presumed killed in battle comes back with a new army he raised in secret. Another could be an unexpected alliance between two of the kings, say a northern king and a southern one, due to a common threat that was previously overlooked. And a third might be a discovery of a long - lost heir to one of the kingdoms that throws the whole power struggle into chaos.
One interesting plot idea could be Daemon Targaryen forming an unexpected alliance during the War of Five Kings. Maybe he teams up with a minor house that has some unique skill or resource. This could change the power dynamics in the war significantly.
Another plot idea could be a love story set against the backdrop of the war. A young couple from different sides of the conflict, and how they navigate their relationship while the war rages on. For example, a knight from one side and a healer from the other. The challenges they face in staying together, and the sacrifices they might have to make for their love. This would add a touch of humanity and emotion to the otherwise war - centered story.
One interesting plot twist could be that Peter Parker reveals his identity not because of the Sokovia Accords but to save a loved one from a villain who has specifically targeted him. For example, the villain might have kidnapped Aunt May and demands that Peter show his face to the world in exchange for her safety.
In some fanfictions, there might be a plot twist regarding the hidden motives of the World Government. They could be revealed to have a much more sinister plan during the Whitebeard War than just taking down pirates. Maybe they are using the war as a cover to test a new and extremely dangerous weapon or to make a power play against other powerful entities in the One Piece universe. This would add a whole new layer of complexity to the story and the relationships between the different factions involved.
One interesting plot twist could be that a previously thought - to - be - evil gem actually has a noble reason for their actions. For example, a gem who was fighting against the Crystal Gems might be trying to protect a hidden colony of gems that would be in danger if the war ended a certain way.
One interesting plot twist could be that the Power Rangers' powers are somehow transferred to the villains. This would completely change the dynamic of the fight. Another could be that the Rangers are sent to an alternate dimension where the rules of the Infinity War are different. Maybe they have to team up with their former enemies just to survive.
A great plot twist could be that Voldemort is actually related to one of the gods in the God of War universe. This would change the whole dynamic of the fight against him in the Harry Potter world. Suddenly, his powers could be even more mysterious and difficult to defeat.
One interesting plot twist could be a character who was thought to be dead actually returns as a powerful force. For example, in some fanfictions, Ned Stark might come back with new knowledge or powers.
Survival is also a common theme. In the midst of the chaos of the War of Five Kings, Jon Snow has to fight to survive, both physically against enemies and politically in a world full of backstabbing and power - hungry people. Also, the theme of identity. He is a bastard, but in these fanfictions, he often has to define himself beyond that label, especially during the war.
In War of the Five Kings fanfiction, the Stark - like character who endures great hardships yet remains noble is very memorable. He is a symbol of hope for his people. Then there's the villainous lord who stops at nothing to gain power, his cruel deeds leaving a mark on the story. Also, the mysterious assassin who works in the shadows and has a complex backstory that is gradually revealed as the story progresses is quite unforgettable.