Tyrion Lannister and Cicero could be an interesting pair. Tyrion is known for his sharp wit and political acumen despite his disadvantages, and Cicero was a great orator and politician in Rome. Their interactions could be full of clever banter and strategic discussions.
Daenerys Targaryen and Cleopatra. Both are strong female leaders with a certain allure. Daenerys has her dragons and Cleopatra had her charm and political savvy. They could either be allies, sharing their knowledge of ruling and conquest, or rivals, vying for power in a world that combines the elements of Rome and Westeros.
Jon Snow and a Roman centurion. Jon Snow is a man of honor who has fought many battles. A Roman centurion is also a trained and disciplined warrior. They could bond over their experiences in war, perhaps teach each other different combat techniques, and together face the challenges that come from the merging of the two fictional universes.
Definitely Harry Potter and Daenerys Targaryen. Harry is the hero of his world and Daenerys is a powerful queen. Their meeting could lead to all sorts of interesting stories, like them sharing their experiences of leading and fighting for what they believe in.
Misty could be paired with Janine as well. Misty's strong - willed nature and Janine's determination could make for a great combination. They might compete in a water - based Pokemon competition where Janine uses her Poison - type Pokemon in creative ways to overcome Misty's water - type Pokemon.
One idea could be a crossover where characters from Rome end up in the world of Game of Thrones. For example, Julius Caesar arriving in Westeros and trying to conquer it with his military tactics. Another could be a story about a gladiator from Rome who finds himself in the middle of the power struggles in King's Landing.
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.
Definitely Tony Stark and Tyrion Lannister. They are both intelligent, witty, and a bit of an outcast in their own worlds. Fans love to imagine them coming together, sharing their knowledge and maybe even coming up with some grand plans to either take over Westeros or save the world from some new threat.
Jon Snow is another character that might be paired with Asher. They are both outsiders in a way. Jon being a bastard and Asher having his own family issues. They could bond over their shared experiences and fight together against the common threats in the Seven Kingdoms, like the White Walkers or the power - hungry lords.
Theon Greyjoy can also be an interesting character to pair with Sansa. Their complex relationship can be developed further in fanfiction. Maybe Theon is trying to make amends for his past actions towards Sansa and they end up forming an unexpected alliance to face common enemies.
In some fanfictions, Gendry is paired with Melisandre. Given her mysterious nature and her past interest in Gendry in the show, it makes for an interesting pairing. Their relationship could be explored in terms of power, magic, and the manipulation that might occur between them as they navigate the complex world of Westeros.
One of the most common pairings is between Daenerys Targaryen and Spartacus. Daenerys is a powerful leader with her dragons, and Spartacus is a symbol of the fight for freedom. A fanfiction could explore how they join forces, with Spartacus' gladiators and Daenerys' Unsullied fighting side by side. Also, Jon Snow and Agron are sometimes paired. Jon Snow's sense of duty and Agron's loyalty could be combined in a story where they lead their respective groups in a great battle against a common enemy.
Sansa Stark could also be paired with the prince. Sansa's knowledge of the North and her diplomatic skills could complement the prince's own abilities. Their relationship could be a slow - burn one, starting from mutual distrust to a strong alliance as they face common enemies in the fanfiction.