In this fanfic, House Bolton would also suffer. Their alliance with House Frey was a key part of their plan to gain more power in the North. If Jon Snow stops the Red Wedding, their scheme fails. They would lose the support of many of their allies who were only in it for the chance to get on the winning side. For House Tully, they would be grateful to Jon Snow. Their family members were also at risk at the Red Wedding, and if Jon Snow saves them, it would strengthen the bond between House Tully and House Stark, potentially leading to future alliances and mutual support in the power struggles of Westeros.
The smaller houses that were either forced or reluctantly involved in the Red Wedding plot would also have different consequences. Some might side with Jon Snow immediately, seeing him as a more honorable leader. Others might be afraid of the retaliation from House Frey and Bolton if they defect. However, overall, the power dynamics in the North would shift significantly. Jon Snow's actions would make him a hero among the common people and the loyal houses. This could lead to a more unified North under the leadership of House Stark, with the other houses either falling in line or facing the consequences of opposing them.
In the fanfic, it's possible that Jon Snow uses his warging ability. He might warg into a large and fearsome animal, like a direwolf or even a wild boar. He could then send this animal into the middle of the Red Wedding chaos, causing enough distraction for him to step in and stop the massacre. He could also use his connection with the Northmen present, appealing to their loyalty to House Stark and the North, convincing them to turn against the Freys and Boltons.
One way is through strategic warfare. He plans meticulously and attacks the enemies' weakest points. Another could be by using his Stark identity to rally the North against the traitors. He might also use his newfound knowledge from his experiences, like his time with the Wildlings, to outwit his foes.
In fanfiction, Jon Snow could avenge the Red Wedding by forging new alliances. He might seek out the support of powerful magic - users or forgotten kingdoms. With their help, he could bring a supernatural vengeance upon those who committed the atrocities at the Red Wedding. Maybe he uses magic to curse their lands, or summons some mythical creatures to attack their strongholds. This way, he not only gets revenge but also makes it a memorable and fitting punishment for the cruel act that was the Red Wedding.
Sansa Stark might be involved as well. Given her relationship with Jon Snow as his sister (though later revealed otherwise), she could play a role in protecting or being involved with the baby. Maybe she helps raise the baby in a world where Jon Snow is constantly facing threats.
Well, the dragon would obviously be a main character in its own right. It could have its own personality and motives.
Tyrion Lannister could be involved. He was close to Daenerys and had a relationship with Jon as well. He might be the one to help protect the baby or offer his wisdom in raising the child. Another character could be Ser Davos. He was loyal to Jon and would surely be interested in safeguarding the future of Jon's heir.
In this fanfic, Jon Snow could be a special Pokemon ranger. He is sent on a mission to a region that has been affected by a strange phenomenon that is making Pokemon act aggressively. Jon, with his experience in handling difficult situations in Westeros, uses his wisdom and combat skills. He forms a bond with a Growlithe, which he names Ghost after his direwolf. Together, they work to solve the mystery and restore peace to the Pokemon region.
The Stark family would be in a much stronger position. Robb Stark would not be killed, which means the North would remain united under his leadership. This could potentially change the entire power dynamic in Westeros. The Boltons and Freys would be seen as traitors and might face severe consequences from the other houses.
One ending could be that Jon Snow ascends the Iron Throne alone. He has proven himself as a leader, defeated his enemies, and is seen as the rightful king. This ending might show him ruling with justice and mercy, much like how he was in the original series. Another ending could be that he refuses the throne. After all the chaos and bloodshed, he realizes that power is not what he wants and instead chooses to go back to the Wall or live a simple life in the North.
One interpretation could be that the Dark Sister is a symbol of Jon Snow's destiny. It might be a sign that he is meant to play a much larger role in the world of Westeros. For instance, he could use it to unite the North and the South.