Jon Snow would be very interesting too. If he gets a second chance, he could be more open about his true identity from the start. He could use his claim to the Iron Throne to bring about a more stable rule. Instead of being exiled again, he could rally the North and the other kingdoms behind him, and make decisions that would benefit all of Westeros without having to keep so many secrets.
Arya Stark would be a great choice. You could write about her using her assassin skills to target key military leaders during the war. For example, she could infiltrate enemy camps disguised as someone else and take out important commanders, which would have a huge impact on the battles.
Theon Greyjoy is a great choice. His complex and tortured past can be further explored in a dark fanfiction. You could write about his internal struggle between loyalty to the Starks and his own family. Another interesting character is Melisandre. Her mysterious powers and motives can be delved into deeper, perhaps she has a more sinister plan all along. And of course, Ramsay Bolton. His cruelty and madness can be taken to new levels in a fanfiction.
Daenerys Targaryen could be a powerful and inspiring female entrepreneur. She starts from nothing and builds an empire of successful businesses. Her dragons could be represented as her unique and revolutionary business ideas that no one else has thought of. She would face challenges from the male - dominated business world, much like she faced challenges in the original series, but she would rise above them with her determination and leadership skills.
Well, it could be about a character who died in the original series getting a second chance at life. For example, Ned Stark could come back and use his knowledge of the events that happened before to change the course of the war for the Iron Throne. He might form new alliances and prevent some of the tragedies that occurred.
Arya Stark is a popular choice. Her journey from a young girl to a skilled assassin is full of potential for further exploration. You can write about her new adventures, her relationships, or how she uses her skills in different situations.
Hot Pie is an underrated character. He could be the focus in a fanfiction where his baking skills become more than just a side note. Maybe he bakes special treats that have magical or medicinal properties and gets caught up in the big political and power struggles because of it.
Hot Pie. He may seem like a minor character, but he has a lot of potential. A fanfiction could explore his life after leaving Arya. Maybe he becomes a famous baker in a large city, and through his bakery, he gets involved in the political intrigues of the city as people from all classes come to his establishment.
His family ties also make him an appealing character for fanfiction. He has a connection to the main houses in Westeros through his family, yet he is on his own journey. This creates a great opportunity for stories about loyalty, family honor, and the struggle between personal desires and family obligations. For instance, he might be tempted to stay in Essos and build his own empire, but his family's situation in Westeros could call him back.
Definitely Tyrion Lannister. In a crossover with 'The Simpsons', he could bring his sharp wit and political acumen to Springfield. He'd probably outwit Mr. Burns in no time. His complex personality and ability to adapt would make for a very engaging character in such a crossover fanfiction.
Arya Stark would be a great choice. She's already a skilled fighter in the ways of the Faceless Men. Training with samurai could enhance her skills even further. Her journey of self - discovery could be influenced by samurai teachings about honor and discipline.