If Robb Stark married a Frey in fanfiction, it would likely have a huge impact on the plot. It could lead to different political outcomes, affect the relationships among characters, and even rewrite the course of the entire saga.
It could lead to a major shift in the power dynamics of the story. Maybe it would prevent the Red Wedding or cause other unforeseen conflicts.
One possible plot could be that after the marriage, Robb Stark has to deal with the complex Frey politics. He might try to use the union to strengthen his position in the North. Maybe he and his Frey bride gradually fall in love despite the initial political motives of the marriage.
If Robb Stark married a Frey girl, it might have led to a more stable alliance between the Starks and the Freys. This could have affected the power dynamics in the story and altered the outcome of the war.
It could change it a great deal. In the original story, Robb's actions regarding the Freys led to the Red Wedding. But if he married a Frey, it would mean no Red Wedding. This would keep Robb alive and his army intact. It could also change the power dynamics in Westeros as the Stark - Frey alliance would be very strong.
The Old Gods themselves would be crucial. They could be represented in various forms like the weirwood trees. And there might be some sort of priest or seer who serves as an intermediary between Robb and the Old Gods, guiding him through the spiritual experiences.
One consequence could be a shift in the power balance. The Mountain was a powerful fighter in service of certain lords. His death would leave a power vacuum among his allies. Robb Stark, on the other hand, would gain more notoriety. His reputation as a fearsome and capable leader would spread, making his enemies more cautious of him.
Well, in the fanfiction world, Robb Stark might also get some unexpected help. Maybe there are some magical elements involved. A wizard or a sorceress could weaken the Mountain's strength or defenses. This would give Robb an edge in the fight. Then, with his courage and fighting skills, he could step in and slay the Mountain.
I recommend 'Robb Stark: The Lost Legacy'. This fanfiction focuses on an alternate timeline where Robb survives. It's interesting as it explores how he would have changed the course of the story. It has some great character development and interactions with other key characters from the series.
A sense of adventure is also present. They were in the middle of a war - torn Westeros. Fanfictions might take them on different adventures together, away from the main battles, or they could be involved in secret missions that test their relationship. Also, the theme of loyalty, both to each other and to their respective causes, is explored. How they balance their loyalty to each other with their loyalty to their families and kingdoms is a rich area for fanfiction writers.
There's a fanfic titled 'Robb Stark's Sister: A Tale with Theon'. In this one, the female Robb Stark character is really strong - willed. She has her own ideas about the future of Winterfell and her relationship with Theon is full of twists and turns. The author does a great job of showing how their different backgrounds shape their interactions. It's an interesting read if you like character - driven stories.
A prevalent theme in Robb Stark time travel fanfiction is the alteration of history. Robb, with his knowledge from the future or past, depending on the direction of his time travel, attempts to change the course of events in Westeros. This often involves political intrigue as he has to navigate the complex power dynamics all over again. Also, self - discovery is a theme. As he experiences different timelines, he learns more about himself and his capabilities. For example, in some fanfics, he realizes that his leadership skills can be applied in different ways than he originally thought.