It might imply that the fanfic is a normal or typical Harry Potter - related story. It doesn't have any elements that would make it seem like a 'freak' piece, like perhaps it doesn't have really wild or uncharacteristic interpretations of the characters or the magic system. It could be a more straightforward, canon - friendly fanfic.
You could try 'The Lost Generation' on fanfiction.net. It's a well - written fanfic that stays true to the spirit of Harry Potter. It doesn't introduce any really outlandish concepts and has a great plot that fits well within the world J.K. Rowling created.
One interesting 'Harry Potter Freak Fanfic' could be the ones that explore alternate universes. For example, a story where Harry is sorted into Slytherin instead of Gryffindor. This changes his whole dynamic and relationships at Hogwarts. He might have different friends and enemies, and the plot could take a very different turn as he deals with the expectations of the Slytherin house which is often associated with cunning and ambition.
You can try websites like FanFiction.net. It has a large collection of 'Harry Potter' fanfics, including some really creative 'Freak Fanfic'. There are different categories and search filters that can help you find the ones you might be interested in.
One interesting aspect could be the unique interpretations of characters. Fanfiction often takes minor characters and gives them more depth or a different backstory. For example, a character like Neville Longbottom might be portrayed as a powerful wizard from the start in some 'harry potter freak fanfiction'. Another aspect is the exploration of different relationships. It could show how characters might interact in ways not shown in the original books, like a friendship between Snape and Hermione.
One way is to check out popular fanfiction websites. Websites like FanFiction.net and Archive of Our Own have a large collection of Harry Potter fanfictions. You can sort them by popularity or rating. Another option is to join Harry Potter fan groups on social media platforms. People in these groups often share their favorite fanfictions.
Well, just based on that title alone, it's difficult to determine its quality. There are so many aspects that make a Harry Potter fanfic great. For example, it could explore new relationships between the characters, or create exciting new magical adventures. But we don't know if 'skull is harry potter fanfic' does any of those things. So, it might be good, it might not.
In a 'harry thinks his name is freak' fanfic, it could start with Harry being in a new magical environment, like a hidden part of the wizarding world. Here, everyone refers to him as 'freak' for some reason he can't understand at first. It could be a cultural difference or a misinterpretation of his powers. As he tries to adapt to this new identity, he discovers secrets about this part of the wizarding world that are related to his real name and his true place in the magical community.
There could be an old wizard who was once shunned by the Potter family. In revenge, he casts a spell on Harry that makes him think his name is 'freak'. This wizard could be lurking in an abandoned part of the wizarding world, waiting for the right moment to strike again or to see Harry completely lose his sense of self.
I'm not sure if it's common. There are so many different types of fanfics in the Harry Potter fandom. Some focus on relationships, others on new adventures. While metamorph - related ideas are interesting, it might not be as common as, say, romance - centered fanfics.