The theme of his impact on Spain's future is also quite common. Since his reign had a profound impact on the country's subsequent development, fanfics might look at how his actions during his rule, whether it was in terms of diplomacy or domestic policies, set the stage for what was to come in Spain. Some fanfics might even create fictional scenarios where different decisions by Charles II lead to alternate histories for Spain.
One common theme is his ill health. Given that Carlos II had significant health problems, many fanfics might explore how this affected his reign and personal life. Another theme could be the political unrest during his time. Spain was facing various challenges politically, and fanfics may depict how Carlos II navigated through these difficult situations.
One popular 'Charles II of Spain fanfic' might be 'The Reign of Charles II: A Different Perspective'. It could explore his rule in a more fictionalized and detailed way, perhaps adding elements of political intrigue and personal relationships that might not be as well - known in historical accounts.
One common theme could be cultural exchange. Given that Romano and Spain have different cultural backgrounds in the Hetalia universe, the crossdress aspect might add an interesting layer to how they interact culturally. For example, how Romano's perception of Spanish culture changes while in crossdress.
One common theme is romance. Fans often explore the relationship between the characters in different ways, such as how they fall in love, deal with relationship problems, etc. Another theme could be adventure, where charles and bughead go on some exciting adventures together, solving mysteries or facing challenges.
Love and romance can also be a theme, though not always. In some fanfics, their relationship blossoms into something more than just friendship. This could be a slow - burn type of romance where they gradually realize their feelings for each other through different events and experiences.
One major theme is the behind - the - scenes relationship. In the fics, it might show how they interact when the cameras are off, like in the paddock or during team meetings. There could be a lot of drama and tension in these situations. Also, some fics might have the theme of growth. They both grow as individuals and as competitors, and this growth can be a central part of the story in the fanfic.
Often, you'll find themes like redemption in Charles and Erik fanfic. Maybe Erik has to find his way back from a dark path, and Charles is there to guide him. Also, the theme of loyalty comes up a lot. Despite their differences, they have a deep loyalty to each other in many of these stories. And there's the theme of sacrifice too. They might be willing to sacrifice their own beliefs or even their safety for the other.
A common theme is his vision for a future where mutants and humans coexist peacefully. In 'Xavier's Dream of Harmony', this is the central focus. His connection to the minds of others is also explored. For instance, in 'The Mind of Xavier', it shows how he uses his telepathic abilities in different ways. And his past traumas and how they shape his present actions are themes in fanfics like 'Charles Xavier: Shaped by the Past'.
One common theme is cultural exchange. Since Spain and Romano (presumably representing Italy) have different cultures, the fanfic might explore how they share and learn from each other's traditions. For example, food could be a big part of it, like Spain introducing tapas to Fem Romano or her sharing Italian pasta with him.
Power and politics are often common themes. Given the nature of the character in the context, fics might explore how Charles zi Britannia wields power and deals with political intrigue.