Well, in some 'pokemon ash turns to stone fanfiction', Ash might turn to stone because of a strange magical artifact. His Pikachu refuses to leave his side and tries to find a way to bring him back. This could lead to Pikachu having to communicate with other Pokémon in ways it never has before, like using telepathy or special signals. Maybe there's a part where Pikachu teams up with Misty and Brock, and they discover that the only way to reverse it is by finding a lost temple with a special crystal.
In this type of fanfiction, Ash is at the core. But it's not just him. His Pokémon are crucial. Pikachu, being his closest partner, will often be the most active in trying to find a solution. Then there are his human friends. Misty, with her knowledge of water Pokémon and her feisty personality, might be the one who comes up with ideas on how to approach the problem. Brock, with his medical knowledge of Pokémon, could be trying to figure out if there's a way to reverse the stoning process from a scientific angle.
In an 'Ash turns into Latios' fanfiction, perhaps Ash is turned into Latios as a way to better understand the Pokémon he has befriended. As Latios, he might be able to communicate with other Pokémon on a deeper level. For example, he could learn the secrets of legendary Pokémon that have always been a mystery. His friends, like Pikachu and Misty, would initially be shocked but then have to figure out how to help him reverse the transformation or support him in this new form.
One possible story could be that Ash is hit by a strange Pokémon attack that turns him into a Pichu. As a Pichu, he has to rely on his Pokémon friends in a whole new way. Pikachu, for example, might take on a protective role, guiding Ash - now a Pichu - through the challenges they face. And Ash would have to learn to control his new Pichu abilities like using Thunder Shock in a more instinctive way since he's now in a Pokémon's body.
I'm not sure which specific 'ash turns into a girl' story you are referring to. There could be various fictional or creative interpretations. Maybe it's a magical transformation where Ash, perhaps a character from a particular universe, is under a spell or has some special encounter that causes the change. Without more context, it's difficult to tell the exact story.
In a fanfiction where Ash turns into a Vulpix, it could start with Ash exploring an ancient and forbidden area. There, he disturbs an old relic or power source that causes the transformation. As a Vulpix, he discovers that he has new abilities such as being able to use Ember and Quick Attack in a more instinctive way. His friends, like Misty and Brock, would be shocked but would quickly try to find a way to reverse the transformation. Meanwhile, Ash in his Vulpix form might make new Pokémon friends who are initially wary but then accept him as one of their own, leading to some interesting adventures in the Pokémon world.
Another possibility is Ash becoming Lugia. Lugia is known as the guardian of the seas. As Lugia, Ash could explore the deep oceans, discover new species of Pokemon, and safeguard the marine ecosystem. He could use his psychic and flying abilities to interact with both water - and flying - type Pokemon, bringing a new era of harmony between different Pokemon types.
Well, if Ash were to turn into Mew in a fanfiction, it would be quite a wild turn of events. Mew is known for its ability to transform and its vast psychic capabilities. Ash, with his new form, could potentially travel to different dimensions that were previously inaccessible. He could also communicate with Pokémon in a whole new way, using Mew's psychic powers to understand their deepest thoughts and feelings.
Well, if Ash turns into a Pikachu in a fanfiction, it would be quite a transformation. Firstly, his communication with Pikachu would become more of an internal dialogue. And he'd have to get used to moving around on all fours and using Pikachu - like movements. His battles would be completely different too. He'd be relying on Pikachu's natural skills rather than his own battle strategies as a human trainer.
In fanfiction where Ash turns into a girl, it could lead to some interesting plot twists. Maybe his relationships with his Pokémon would change in unique ways. For example, some Pokémon might be more protective of him now that he's a girl. Also, his interactions with other trainers, like Misty and Brock, would be different. They might treat him with more chivalry or have different emotional responses to his new form.