A really interesting crossover could be the time - travel aspect. Imagine Captain America, with his knowledge of future - like technology (compared to Westeros), going back in time in the 'Game of Thrones' world. He could change the course of events, like preventing certain battles or helping to unify the kingdoms much earlier.
The idea of Captain America's shield in the 'Game of Thrones' world is also quite interesting. His shield is not only a powerful weapon but also a symbol. In fanfiction, it could be seen as a magical or highly prized object in Westeros. Different characters might fight over it, or it could be used as a means to rally people together against a common enemy, like the Night King.
One of the most fascinating crossovers is when the ideologies clash. Captain America stands for freedom and justice in a very different way than the characters in 'Game of Thrones'. So when he tries to impose his values on the people of Westeros, it creates a lot of drama. For instance, he might not understand the feudal system at first and try to break it down, which would cause both positive and negative reactions from the different houses.
One interesting crossover could be a story where Hermione uses her magic to help Captain America in a battle against a new, magical - tech hybrid enemy. Maybe she creates a spell to enhance his shield's capabilities or uses her knowledge of potions to heal his wounds faster.
Well, a great crossover fanfiction could involve the two characters meeting in a multiverse scenario. Captain America, with his sense of justice, would immediately recognize Naruto's similar values. They could team up to fight a common enemy that threatens both their worlds. Naruto could teach Captain America about the power of friendship and belief, which are important in his world, while Captain America could show Naruto the importance of strategy and discipline in combat.
He would bring a new set of values. In a world full of backstabbing and power - hungry lords, Captain America's integrity would stand out. He'd probably try to end the senseless wars and focus on the real threats like the undead.
In some fanfictions, the technology of Star Wars could be combined with Captain America's world. For example, the idea of Captain America using a lightsaber instead of his shield for a while. It would be a very different combat style for him, and he'd have to learn how to master the Jedi weapon. There could also be a scenario where he has to deal with the Force, which is completely new to him compared to his usual super - soldier abilities.
The presence of Captain America in a Game of Thrones fanfiction could completely shift the power dynamics. His leadership skills are top - notch. He could inspire the people of Westeros to fight against the common threats like the White Walkers in a more unified way. In terms of character relationships, he would probably have an interesting dynamic with characters like Jon Snow. They both have a strong sense of duty, but Captain America's more idealistic view might influence Jon Snow to be more forward - thinking in terms of creating a better world rather than just focusing on ruling the North or the Iron Throne.
The crossover where Naruto's shadow clones are used in the battles for the Iron Throne is really interesting. It gives a new dynamic to the warfare in 'Game of Thrones'.
One interesting crossover could be a scenario where the political intrigue of Game of Thrones meets the explosive elements of gunpowder from the Gunpowder era. For example, imagine if the houses in Westeros had access to gunpowder weapons. It would completely change the dynamics of warfare. The battles that were once fought with swords and bows could now be dominated by gunpowder - based artillery, changing strategies and alliances. Also, characters like Tyrion Lannister might use his intelligence to manipulate the new power that gunpowder represents, perhaps creating new forms of defenses or offenses for King's Landing.
One interesting crossover could be a vampire from Twilight finding themselves in the political intrigue of Westeros in Game of Thrones. Maybe they use their superhuman abilities to navigate the power struggles.
A really interesting crossover could be where the Eva pilots are inserted into the Game of Thrones world as special protectors. They use their piloting skills and combat abilities to protect a particular house or kingdom. For example, Rei could be a mysterious figure protecting the Night's Watch, with her calm and stoic nature fitting well into that cold and desolate place.
One interesting crossover could be the use of Aquaman's underwater kingdom's politics and apply it to the power struggles in Game of Thrones. For example, the complex hierarchies and rivalries among different underwater tribes in Aquaman's world might mirror the Houses vying for the Iron Throne. Another could be a character from Game of Thrones finding themselves in Aquaman's world and having to adapt to the underwater environment and its rules.