The idea of Fenrir saving Harry is interesting because it subverts the typical relationship. Fenrir is often seen as a villain in the Harry Potter universe, so when he becomes the savior, it creates a whole new dynamic.
There are many fanfiction platforms where you might find 'fenrir saves harry' stories. Archive of Our Own (AO3) is a great place to start. Just go to the site and use the search bar to type in 'fenrir saves harry'. You'll likely get a list of relevant fanfictions that you can explore.
There's a fanfiction called 'Greyback's Redemption Arc'. In it, Fenrir Greyback saves Hermione from a group of Death Eaters. The author might have written it to explore the idea of redemption for a character like Greyback. Maybe he saves Hermione because he sees her as a symbol of the good in the wizarding world that he has lost touch with, and this act of saving her could be the start of his journey towards redemption.
One possible plot could be that Hermione stumbles upon Fenrir Greyback in a situation where he's about to be killed by some dark wizards who see him as a loose end. Hermione, being the empathetic and brave witch she is, decides to save him. Maybe she believes that every life is worth saving, even a werewolf like Fenrir. She could then try to rehabilitate him, using her vast knowledge of magic and her strong moral compass.
Well, in this kind of fanfiction, Fenrir might be protective of Harry perhaps because he sees something special in Harry. Maybe he has his own reasons that are different from the normal perception of their relationship in the original works. It could be that Fenrir has a change of heart or there are some hidden plot elements that make him want to safeguard Harry.
Yes, there are some interesting ones. You can start by looking on fanfiction websites like Archive of Our Own. Just search for 'Harry is Fenrir' and you'll find a variety of stories. Some might focus on an alternate universe where Harry has some connection to Fenrir, like being his descendant or having a special power related to him.
Fenrir Greyback is significant in Harry Potter fanfiction as he represents a different kind of evil compared to the main antagonists. He's more primal. His actions are often driven by his werewolf instincts. In fanfics, this can be used to create unique horror - themed storylines where characters have to face not just a dark wizard but also a savage werewolf.
Friendship or mentorship can also be a theme. In some fanfictions, Harry might take on the role of trying to mentor Fenrir, to help him control his werewolf side. Or they could form an unexpected friendship that challenges the norms of the wizarding society. This kind of relationship development can be really interesting to read about.
Fenrir Greyback in fanfiction can also be a way to explore the werewolf sub - culture in the Harry Potter world more deeply. Some stories might focus on how he influences other werewolves, whether he's a leader or a lone wolf (no pun intended). His character can be used to show the discrimination that werewolves face in the wizarding world, as he's such a violent example of one.
Well, 'fenrir harry potter fanfiction' might deal with Fenrir's role as a werewolf in the wizarding world. It could explore how his lycanthropy affects the plot, perhaps in some alternate scenarios. For example, it could show his interactions with the werewolf community and how that in turn impacts the overall story of Harry Potter. Fanfiction often takes existing elements and twists them in new and interesting ways, and with Fenrir, there are a lot of possibilities. He's such a menacing character, and fanfic writers could delve deeper into his psyche or create new storylines around him.