Arya Stark is a fascinating character for a dark fanfiction. Her skills as an assassin could be used in a much darker context, like she becomes a hired killer for the most powerful and corrupt families in Westeros. Jaime Lannister is also interesting. His redemption arc could be completely flipped, and he could return to his more villainous ways. And then there's Qyburn. His unethical experiments and loyalty to Cersei could be expanded upon. Maybe he creates some truly terrifying creatures that change the power dynamics in Westeros.
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.
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.
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.
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.
One idea could be to explore what would happen if a minor character from the series, like Gendry, had secretly been trained in magic all along. Another could be a fanfiction where the White Walkers and the humans form an uneasy alliance against a new, even greater threat from Essos. Or perhaps a story where Daenerys doesn't go mad, but instead finds a way to truly bring peace to Westeros through diplomacy and understanding.
Gendry is quite an underrated character. He has the blood of a king in him, being Robert Baratheon's bastard. In fanfiction, he could be explored more in - depth. He could rise up and claim his birthright, or he could use his skills as a smith to create powerful weapons for different factions. Another is Ser Davos. He's a loyal and smart man, but often overlooked. Fanfiction could show him in more complex political situations, using his wits to navigate through the power plays in King's Landing.
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.
Yuuichi is definitely one of the most interesting. His intelligence and ability to manipulate situations make for great storylines. You can explore his motives and how far he's willing to go to win. Another is Tenji, his complex relationship with Yuuichi and his own moral code can be a great focus.
In Game of Thrones fanfiction, Daenerys Targaryen is a great character to read about. Fanfic writers may expand on her dragon - riding adventures, or create alternate scenarios where she makes different decisions regarding her claim to the Iron Throne. Jaime Lannister is also interesting. He could be depicted in fanfiction as trying to redeem his past actions in more elaborate ways. Then there's Sansa Stark, who might be shown growing into an even more powerful and politically astute figure in the North through different storylines in fanfiction.