Well, a frequent theme is the exploration of power. Harry has magical power, and in the Firefly world, power is often about control of resources or ships. So, how he uses his magic in relation to the power structures there is a big theme. Also, friendship is common. Harry forming new friendships with the crew of the Serenity, like how he might become friends with Zoe or Jayne. And there's the theme of identity. Harry has to figure out who he is in this new universe while still holding on to his old self.
One common theme is the clash of cultures. Harry comes from a world full of magic and wizardry, while Firefly has a more gritty, science - fictiony, space - faring culture. Another theme could be redemption. Harry might use his immortality to right wrongs in the Firefly universe.
Yes, there are quite a few. You can start by looking on popular fanfiction websites like Archive of Our Own. Some of these fanfics might combine the magic elements from Harry Potter with the unique space - western setting of Firefly in really interesting ways.
The themes in 'Harry Potter is immortal' fanfictions usually include a search for purpose. Harry has an endless life, so he needs to find something meaningful to do. There is also the theme of change. While he doesn't age, the world around him does, and he has to adapt. And of course, the theme of mortality in contrast to his immortality. He is constantly reminded of the fact that everyone else is mortal, and this can create a lot of internal conflict within him.
One common theme is the clash of cultures. Naruto comes from a world of ninjas and Harry Potter from a world of wizards. So, when they are combined, there is often a struggle to understand each other's ways. For example, Naruto might not understand the concept of magic wands at first, and the Hogwarts students might be baffled by his chakra use.
Well, a frequent theme is the idea of immortality and its consequences. In Harry Potter, immortality is often a more magical and less physical concept, while in Twilight it's very much a physical vampiric state. Fanfictions might explore how characters deal with this difference. Also, the theme of friendship and loyalty can be seen as characters from both worlds form new relationships. For example, Harry might have to decide whether to trust a vampire from Twilight when they're in a difficult situation together. And this can lead to complex character development as they navigate these new relationships.
One common theme is the power struggle. Since immortality often brings great power, characters might fight over it or struggle with how to use it in a world where there are already complex power structures in both the Harry Potter and Percy Jackson universes. Another theme is friendship. Characters from the two series might form new friendships or have their existing friendships tested in the face of new challenges brought about by the combination of the two worlds and the immortality factor.
Well, many 'Harry is immortal fanfiction' stories deal with the theme of sacrifice. Just because he's immortal doesn't mean he can't sacrifice things. In fact, his immortality might make him more likely to sacrifice himself for others in certain situations. Another common theme is the exploration of different magical abilities. Since he has an unlimited amount of time, he might discover new and unique magical powers that normal wizards don't have access to. And of course, the theme of good vs. evil still exists. His immortality can be a major factor in the battle between good and evil in the wizarding world.
In 'Harry Potter Immortal Emperor' fanfictions, a common theme is the exploration of new magical abilities. Since Harry is in an elevated position as an Immortal Emperor, he might discover or develop powers that were previously unknown. Another theme is the redefinition of good and evil. His new status could blur the lines between what was once clearly right and wrong. And the theme of time is also present. With immortality, Harry has to deal with the passage of time in a different way compared to normal wizards. This can lead to interesting plot developments and character studies.
A frequent theme is also the idea of them finding a way to be together despite all the odds. There are many stories where they have to face external threats or internal crew conflicts that test their relationship. For example, some fanfics might have the crew not approving of their relationship, or they might be hunted by an enemy that forces them to reevaluate their feelings for each other. It's all about how they navigate these difficult situations while still being true to their characters as we know them from the show.
One common theme is the clash of different cultures. Buffy's world has a lot of supernatural elements and a modern - day Earth - like setting in some ways, while Firefly has a more space - western feel. So when the two worlds collide, there's often exploration of how these different cultures interact.
One common theme is the exploration of relationships. For example, romantic relationships between characters that were not fully explored in the original books, like the relationship between Harry and Hermione. Another theme is the expansion of the magical world, such as new spells or magical creatures. Also, there are fanfictions that focus on the backstories of minor characters, giving them more depth and significance.