If Edward Elric becomes Pride in fanfiction, it could lead to a really interesting plot twist. His alchemy skills might be warped in a new and dangerous way. Instead of using alchemy for good, like he usually does, he could start using it for Pride's more self - serving and malevolent purposes. Also, his physical form might change to something more in line with what Pride is like in the original story. This could make for some really intense fight scenes, especially if he has to face off against his former allies who now see him as a threat.
The story would likely become a tale of redemption. Even as Pride, Edward may still have some lingering humanity. His friends and allies could try to remind him of who he really is. There could be a series of events where he slowly starts to realize the error of his ways as Pride. Maybe he sees the harm he is causing to those he cares about, or he has a moment of self - reflection that makes him question his new identity. This could lead to a great climax where he either fully reverts back to his old self or finds a new way to exist that combines the best of both his old and new identities.
Well, it could mean Naruto would adopt Edward's sense of fashion. He might start wearing long red coats and black pants, just like Edward. In the fanfiction, Naruto could also learn about Edward's moral code. Edward has a strong sense of right and wrong when it comes to alchemy, and Naruto could use that to re - evaluate his own actions as a ninja. Maybe he would be more cautious about using certain jutsus that have a high cost or moral implications.
In fanfiction where Edward Elric becomes a Homunculus, his appearance would likely change. He might have the characteristic red eyes of a Homunculus. His physical abilities would be enhanced, but at the cost of his humanity. He'd be more connected to the Homunculus' plans and goals, perhaps being forced to work against his former comrades. However, he could also use his new position to try and undermine the Homunculus from within, but it would be a difficult and dangerous path to take.
Another theme is redemption. In many fan fictions, Edward's pride has led him to make mistakes, and the story is about him making amends and growing past his over - prideful nature. It's about him learning to be more humble and accept help from others.
You can try fanfiction platforms like Archive of Our Own (AO3). There are a large number of Pride Edward Elric fanfictions there. Just use the search function and type in 'Pride Edward Elric' to get relevant results. It has a great tagging system that helps you filter out the ones that suit your taste.
One more great plot could be Naruto being trained by Edward in alchemy. Edward is a brilliant alchemist despite his young age. Naruto, with his eagerness to learn new things, would soak up all the knowledge. He could start creating his own alchemical ninja tools. For example, he could make a kunai that can transmute into different forms depending on the situation. And as he gets better at alchemy, he might start to question his own ninja way. Is it really all that different from alchemy? This internal struggle could add a lot of depth to the fanfiction.
Yes, there are likely fanfictions out there with such a concept. The worlds of Naruto and Fullmetal Alchemist, where Edward Elric comes from, are quite different, but that's what makes the idea of a crossover in fanfiction so interesting. Writers might explore how Naruto's ninja world and its unique powers could interact with Edward's alchemical abilities and the complex world of Amestris.
Alphonse Elric is often present. He might play a role in helping Edward understand and use his new gamer - like abilities in relation to alchemy. For example, he could be the one who discovers a new aspect of Edward's powers.
One great 'Pride Edward Elric' fan fiction is 'The Alchemist's Redemption'. It delves deep into Edward's internal struggles with his pride in a new and interesting way. The author does a wonderful job of exploring how his pride might change in different situations, adding a fresh perspective to the character.