One underrated pairing could be Sansa Stark and Missandei. Sansa has grown into a shrewd political player, and Missandei is highly educated and close to Daenerys. They could bond over their experiences in the political and courtly arenas, and perhaps even form an alliance that could influence the power dynamics in Westeros.
The pairing of Gendry and Theon Greyjoy could be really cool to explore. Gendry is a strong and somewhat naive blacksmith, while Theon has a complex and tortured past. Their stories colliding could lead to some great character development for both. Maybe Gendry could help Theon find some redemption, or they could team up to fight against a common enemy.
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.
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.
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.
Podrick Payne is quite underrated. In fanfiction, he could be developed into a great knight with his own story. He has shown loyalty and potential, and could be given more heroic deeds. Another is Shireen Baratheon. She could be a key figure in fanfiction, perhaps having survived and using her kindness and knowledge to bring about positive change in Westeros. And Dontos Hollard could also be interesting. He could be redeemed in fanfiction and play a crucial role in the political games of King's Landing.
Jon Snow and Daenerys Targaryen can make an interesting soulmate pairing in fanfiction. They both have noble hearts and are leaders in their own right. Their union could bring about a new era in Westeros. Another could be Arya Stark and Gendry. They have a history together, and Gendry has always had a soft spot for Arya, which could be developed into a soulmate - like relationship.
Ser Davos Seaworth is often overlooked in some aspects. He has a great backstory and a strong moral compass. A fanfic could explore his early days as a smuggler more in - depth, or what he would do if he had to make a choice between his loyalty to Stannis and a new opportunity that could benefit the common people more. And then there's Bronn. He's always been in the background for the most part. A fanfic could put him in a situation where he has to decide whether to stay a sellsword or take on a more noble role, perhaps by taking over a small holdfast and ruling it in his own rough - and - tumble way.
Steve Randle is often overlooked. He could be explored more in fanfiction. He's a loyal friend to Sodapop and has his own dreams and fears. Fanfiction could show his life outside of just being a greaser, like his relationship with his family or his plans for the future.
Jon Snow and Elsa seem to be a popular pairing. The idea of the brooding and noble Jon with the powerful and reserved Elsa has a certain appeal. Their different worlds and personalities could create an interesting dynamic.
One way they could collide is through a magical portal. Imagine Doctor Strange discovers a portal that leads to the world of Game of Thrones. The Avengers could then enter this new world. They might be shocked by the medieval setting and the presence of dragons. Thor, being from a somewhat similar mythical background, could potentially communicate with the dragons. This would lead to an interesting alliance between the Avengers and the dragon riders in Westeros, creating a unique fanfiction scenario.
Thor and Captain Marvel. Thor, with his Asgardian powers and warrior spirit, paired with Captain Marvel's incredible cosmic powers would be a force to be reckoned with. They could have some great banter as they come from different backgrounds but are both very powerful.