Well, there are many. For instance, some creature fics involve veelas. They usually depict veelas with their alluring charm and the complications that come with it in the context of the Harry Potter universe. Fics about thestrals are also common. These flying horse - like creatures are often used to create interesting plotlines, like secret midnight rides or being used in a hidden magical race.
First, know the lore. Understand how J.K. Rowling described the creatures in the original books. For example, if you're writing about dragons, know their different breeds and characteristics. Second, create unique relationships. Maybe a character has an unexpected bond with a creature, like a Gryffindor befriending a Slytherin - like creature. Third, add a fresh plot. Don't just retell what's in the books, but use the creature to drive a new story, like a quest to find a lost creature's home.
No. 'NSFW' (Not Safe For Work) content, especially in fan fiction, goes against the family - friendly nature of the original Harry Potter series. The official Harry Potter community promotes positive, inclusive and appropriate content for all ages.
Yes. In some fanfictions, the author might create an interesting plot where Harry Potter is shown as a fan of Grindelwald for various reasons. Maybe it's due to Grindelwald's powerful magic that Harry is intrigued by, or perhaps the author wants to explore a more complex relationship between the two characters outside of the original canon.
Definitely not. In the vast world of Harry Potter fanfiction, the main themes usually revolve around the characters we know and love, their growth, and the magical elements that are already established in the original series. Concepts related to machines are quite far - fetched in this context. While there may be some very niche fanfictions that might touch on it, it's not a common or mainstream idea within the community.
No. 'Suicidal' themes are quite dark and disturbing. The Harry Potter series is mainly about magic, friendship, and fighting against evil. Fanfiction should also uphold positive values to some extent. This kind of theme may have a negative impact on readers, especially those who are young and impressionable.
It has deepened the fandom. Fan fiction gives fans a creative outlet, which in turn keeps their interest in the Harry Potter world alive longer. They can explore different ideas and interpretations, which enriches the overall fandom experience.
I really like 'The Seer's Daughter'. It's a fanfic that tells the story of a character who has the gift of seeing the future, but it comes with a great cost. The author has created a very vivid world within the existing Harry Potter universe, with new spells and magical creatures that blend in well with the original lore. It has a great mystery element that keeps you guessing until the end.
It can have a negative impact. It might alienate some fans who are uncomfortable with such adult - themed content in a franchise they love for its more family - friendly and magical elements.