Well, his participation in the Triwizard Tournament is often a theme. Writers might write about how he prepared for the tasks, his thoughts during the competition, and his relationships with the other champions. Also, his friendships or rivalries within Ravenclaw house can be a common theme.
Yes, there are quite a few. You can start by looking on fanfiction websites like FanFiction.net or Archive of Our Own. Some fanfictions might focus on Roger Davies' relationship with other characters from Hogwarts, or his experiences during the Triwizard Tournament which he participated in.
One common theme is adventure. Both Harry Potter and Gold Roger are associated with exciting journeys, so in the fanfiction, their combined adventures are often explored.
One popular theme is the 'what - if' scenarios. For example, what if Harry had been sorted into Slytherin instead of Gryffindor? Another common theme is romance, like Harry and Hermione getting together instead of Ron and Hermione. There are also a lot of fanfictions that explore the backstories of minor characters in more detail.
It's also possible that Lisa Davies is a transfer student from a different wizarding school. Her arrival at Hogwarts could stir up things as she brings with her different magical traditions and knowledge, which then affects the way the Hogwarts students view magic.
The theme of time - travel is quite common in 'Harry Potter' fanfiction. Writers might send characters back in time to change certain events, or they use time - travel as a way to understand the past better. Also, the idea of magical inheritance is popular. Fanfictions might explore how a character discovers a long - lost family magic or a special power that was passed down through generations.
Some popular themes include alternate universes where the characters have different roles or relationships. For example, a story where Harry is sorted into Slytherin instead of Gryffindor. Another theme is exploring the backstories of minor characters in more detail, like Neville Longbottom's family history. Friendship development among the main characters is also a common theme, showing how their relationships grow and change over time at Hogwarts.
One popular theme is 'What if' scenarios. For example, what if Harry had been sorted into Slytherin? Another is exploring the backstories of minor characters like Neville's parents. And relationships are also a big theme, such as the friendship between the trio in more depth or romantic relationships that might have been hinted at but not fully explored in the original books.
Popular themes include the origin stories of some of the magical items or places in the Harry Potter universe. For instance, how the Marauder's Map was actually created. Another theme is the inclusion of different cultures in the wizarding world. And of course, there are the darker themes where new dark wizards emerge and the characters have to face new threats, often with a new group of heroes coming to the fore.
Character backstories are a big theme. Many fanfictions delve deeper into the past of characters like Severus Snape. We get to see his life before Hogwarts, his family situation, and how it all shaped him into the complex character we know in the original series. Also, the exploration of different Hogwarts houses and their unique cultures is quite popular.
One popular theme is alternate universes. Writers create different versions of the wizarding world, like a world where Voldemort won. Another theme is relationships, exploring different romantic pairings for the characters. And there are also those that focus on the backstories of minor characters.