What are the common themes in 'Harry Potter x Jane Foster fanfiction'?

Yes, there are some out there. You can start by looking on popular fanfiction websites like Archive of Our Own. Just search for 'Harry Potter x Jane Foster' and you'll likely find a variety of stories with different plotlines and interpretations.

One common theme is the clash and then the fusion of magic and science. As Doctor Strange represents magic and Jane Foster represents science, their coming together often involves exploring how these two seemingly opposite forces can interact and complement each other.

One possible fanfiction could involve Jane Foster using the Bifrost to accidentally end up in the Harry Potter universe. Maybe she arrives at Hogwarts and is mistaken for a new kind of magic user. The students and professors would be intrigued by her Asgardian technology and different kind of magic. She could potentially teach them about the Nine Realms while also learning about the wizarding world's magic.

Well, a fanfiction could involve Jane Foster being a healer at Hogwarts. Since she has some medical knowledge from her own world, she could introduce new ways of treating magical injuries. Or, Harry Potter could be sent on a mission to Jane Foster's world and he has to adapt to the different technology and culture there while still using his magic to solve problems. Also, there could be a story where the Asgardian magic in Jane Foster's world has some sort of connection to the magic in the 'Harry Potter' universe, and they have to figure out how to use this connection to save both worlds from a great evil.

One common theme is friendship. Leo and Jane often form deep friendships with other characters in the Harry Potter universe. Another theme is adventure. They go on various quests and face different challenges in Hogwarts and beyond.

Harry Potter and Jane Foster themselves are great to pair. Their different backgrounds, one in magic and the other in science, can create a lot of interesting interactions. Hermione could also be paired with Jane Foster. Hermione's thirst for knowledge and love of learning could mesh well with Jane's scientific mind. They could exchange ideas about different forms of knowledge. Another good pair could be Thor (since he's related to Jane Foster) and Hagrid. They both have a big - hearted and strong - willed nature and could have some fun adventures together in a fanfic.

A possible plot would be that Jane is researching something related to energy or space - time when she stumbles upon a magical rift. Out comes Harry. At first, they are both confused. But as they explore their family history, they find out they are siblings. Then they have to deal with the fact that there are forces in both their worlds that don't want them to be together. They would go on a journey to find out why and how they are related and also to protect their respective worlds from those who oppose their union.

One common theme could be the clash of two different worlds. Harry comes from a world full of magic, while Mary Jane is from a more normal, modern world. So, the exploration of how they deal with each other's worlds is often seen.

Power and its implications is also a frequent theme. X23 has her mutant powers, and in the Harry Potter world, there is magic power. Fanfictions may explore how these different forms of power are perceived, how they can be used for good or bad, and how the characters with these powers are treated by society. For example, X23's powers might be seen as dark magic in the wizarding world at first, and the story could be about how she proves that she is not a threat but an ally.

Jane Foster could introduce Harry Potter to the concept of the Bifrost. She might show him how it works and how it can be used to travel between different realms. Harry, in turn, could share his knowledge of magic with her. They could then use their combined knowledge to go on an adventure, perhaps to a new and unknown realm.