Fanfiction.net is also a great place to search. Just use the search bar and type in 'Joker adopts Harry Potter'. There are likely to be some works there, although the quality may vary. You might have to dig through a bit to find the really good ones.
You can try looking on fanfiction websites like Archive of Our Own (AO3). It has a vast collection of fanfictions from various fandoms, and there's a good chance you'll find 'Joker adopts Harry Potter' ones there.
Well, it's possible that there exists a 'Harry Potter is Joker fanfiction' out there. However, this kind of crossover is quite niche. Fanfiction writers often come up with the most unexpected pairings. Maybe start by looking at specialized Harry Potter or Joker fanfiction communities. They might be more likely to have or know about such an odd - but potentially interesting - mash - up.
One interesting aspect could be how the Joker's chaotic nature would contrast with the magical world of Harry Potter. For example, he might use his wacky sense of humor to disrupt the strict rules at Hogwarts. He could turn Defense Against the Dark Arts classes into his own little shows, much to the dismay of the professors.
You can try looking on fanfiction.net. It has a large collection of various fanfics, and there's a good chance you'll find some 'harry as joker fanfic' there. Another option is Archive of Our Own (AO3). It's known for its extensive range of fan - created works, including unique crossovers like this.
You can start by looking on Archive of Our Own (AO3). It has a large collection of fanfics, and you can use the search function to type in 'Harry adopts a Tom' to find relevant stories.
Another option is to ask other Harry Potter fanfiction enthusiasts. You could join some Harry Potter - related forums or groups. There are usually experienced readers who have a wide range of knowledge about different types of fanfictions. They might be able to point you in the right direction and tell you about some great stories with this particular plot.
You can start by looking on fanfiction websites like FanFiction.net. It has a large collection of Naruto fanfictions, and you can use the search bar to specifically look for 'adopts Naruto fanfiction'. There are also filters you can use to sort by popularity, rating, etc.
You can try some popular fanfiction websites like Fanfiction.net or Archive of Our Own (AO3). On these platforms, you can search for 'Harry Potter' in the search bar and then browse through the numerous stories available. There are likely to be many different types of fanfiction related to Harry Potter, including some that might be numbered as part of a series or have a specific code like '893' if it's a unique identifier within a particular collection or by an author.
You can start by looking on fanfiction.net. It has a large collection of Harry Potter fan fictions, and there are likely quite a few 'Snape adopts Harry' ones in there. Just use the search function and type in the relevant keywords.
You can start by looking on popular fanfiction websites like FanFiction.net. It has a large collection of Harry Potter - related fanfictions, and there's a good chance you'll find some great Charlus Potter ones there.
Another option is Tumblr. There are a lot of Harry Potter fanfiction writers and readers on Tumblr. They often share their works or recommend others. Some blogs are dedicated solely to curating the best Harry Potter fanfiction. You can search for relevant tags like #HarryPotterFanfiction or specific character names along with 'fanfiction' to find some great reads.