One common theme could be friendship. Since MLP is big on friendship, it might be incorporated into how Harry and the MLP characters interact, even with the presence of the basilisk element. Another could be magic and its different forms in both universes.
Well, a common theme is often the exploration of different powers. Harry's powers related to the basilisk in the Potter world, like Parseltongue, might be compared or combined with the magic in MLP. Also, the theme of good vs. evil can be present. The basilisk is often seen as a symbol of danger in Harry Potter, and this can be translated into the MLP world, where the characters may have to face this new 'evil' in the form of the basilisk - influenced Harry.
Another theme could be the power imbalance and how the characters navigate it. The Basilisk has its own kind of power, and Harry has his magic and hero status. In these fanfictions, authors might explore how they come to terms with their differences in power while in a relationship. It can be a complex exploration that adds depth to the story. Also, there might be themes of redemption for the Basilisk, as it moves from being a potential threat to a loving partner in the fanfiction.
In 'Harry is a Basilisk' fanfiction, the theme of transformation is quite common. Harry's physical transformation into a basilisk brings about a whole new set of challenges. There's also the theme of loyalty. His friends' loyalty to him may be tested when they find out he's a basilisk. Additionally, the theme of mystery can be present as there are many unknowns about being a basilisk in the context of the Harry Potter universe.
Yes, there are some out there. You can start by looking on popular fanfiction websites. Some might be well - written with interesting crossovers between the Basilisk - Harry Potter universe and My Little Pony. However, the quality can vary greatly, so it might take some time to find ones that really suit your taste.
One common theme is friendship. Just as in both the original Harry Potter series and MLP, friendship often plays a central role. Characters from both universes learn from each other about the value of friendship.
One common theme is the idea of Harry overcoming his fear of the Basilisk. Another is the discovery of a hidden power or connection related to the Basilisk. For example, in some fanfics, Harry might find out he has a special ability to communicate with the Basilisk.
One common theme is redemption. Many fanfics explore the idea of the basilisk having a chance to atone for its actions, like in 'A Basilisk's Redemption'. Another theme is mystery. Fanfics often try to uncover more about the basilisk's origin and its true nature, as seen in 'The Secret of the Basilisk'.
Adventure is another theme. They could be on a quest together in the Equestria Girls universe, facing challenges and growing as characters. This gives the writers a chance to create exciting plots and show the development of their relationship within the context of an adventure.
One common theme is adventure. Given Spike's role in Ponyville and Ember's in the Dragon Lands, they can go on all sorts of exciting adventures together. Another theme is friendship. Their relationship often starts as a friendship and then may develop further. And of course, the theme of overcoming differences, as they are from different species.
One common theme is friendship. Since MLP is big on friendship, fanfictions often explore how Thorax and Spike's relationship grows in terms of friendship. They might go on adventures together and learn about each other's cultures and ways of life.
One common theme is redemption. Since Tempest has a more troubled past, many fanfictions focus on her journey towards redemption with Twilight's help. Another theme is friendship. They are two very different characters, so exploring how they become friends is popular. For example, they might start off as strangers or even enemies and then develop a deep bond.