The shiny Pokemon could make Ash a target for some evil organizations. His friends would then have to be more protective of him. For example, Team Rocket might be more desperate to steal the shiny Pokemon. This would strengthen Ash's bond with his friends as they all work together to protect the shiny Pokemon and each other from the threats, and it could also lead to some heroic moments where they prove their loyalty to one another.
Well, other trainers would probably be both jealous and in awe. Some might try to befriend Ash just to get closer to the legendary pokemon. Others, especially those with a competitive streak, would see Ash as a huge threat and might be less friendly towards him.
Ash would likely become more open - minded. Meeting a shiny ghost pokemon at the start would expose him to a type of pokemon he might not have expected so early. This could make him less fearful of the unknown in general. For example, he would be more willing to explore spooky places or deal with pokemon that have a reputation for being difficult to handle.
In this fanfiction, Ash could start in a mysterious forest and spot a shiny Celebi. Celebi, being a time - traveling Pokemon, could take Ash on a journey through different time periods in the Pokemon world. He might see how the Pokemon world has evolved over time, meet some of his ancestors or future versions of himself, and have to solve various problems in each time period to keep the balance of the Pokemon world.
Ralts could make Ash more empathetic. Since Ralts is a psychic - type Pokémon that can sense emotions, Ash might become better at understanding the feelings of other Pokémon and people. This could help him in his journey to be a better Pokémon trainer.
Well, one possibility is that Ash meets the shiny ghost pokemon early on his journey. Maybe it's a Gastly that has some special power. Ash could then try to befriend it, facing challenges from other trainers who also want this rare pokemon. The shiny Gastly might lead Ash to an old, haunted place full of secrets about pokemon evolution or some long - lost pokemon techniques.
It would change his journey a great deal. Firstly, having a shiny Charmander would make him stand out more. Other trainers would be more likely to challenge him, either to prove themselves against someone with a rare Pokémon or to try and get his Charmander. Also, trainers with more experience might offer to help Ash train his shiny Charmander, which could lead to new training techniques. In Pokémon contests, his shiny Charmander would be a show - stopper, giving him an edge in those aspects of his journey as well.
If Ash becomes a female in the fanfic, his relationships with his Pokemon friends would also be different. His Pokemon might sense the change and some could be more affectionate, while others might be a bit confused at first. Regarding his human friends, his relationship with Gary would take an interesting turn. Gary might be more intrigued by this new Ash and could either be more competitive or try to help her adjust. And when it comes to Professor Oak, he might be more fatherly or have different expectations of Ash now that she is female, perhaps expecting her to focus on different aspects of Pokemon research or training.
Ash's transformation into a Gardevoir would have a complex impact on his relationships. Some Pokemon that were once his rivals might see him in a new light and either be more respectful or more envious. His bond with his own Pokemon team would change too. They would have to adapt to his new abilities and appearance. And he would form new relationships with Pokemon that are more associated with Gardevoir's kind, like other Psychic or Fairy - type Pokemon.
Well, consider Ash starting in the Hoenn region in a fanfiction. The Pokémon in Hoenn are known for their diverse abilities and forms. His Pokémon from other regions might feel a bit out of place at first. But as they explore Hoenn together, they would learn to adapt. His relationship with his Pokémon could become more collaborative as they all face new challenges. For instance, his Pikachu might have to deal with stronger Electric - type Pokémon in Hoenn, which would make it rely more on Ash for training and support. His other Pokémon would also have to learn new techniques to compete, and this shared struggle would deepen their bond with Ash.
If Ash was in Serena's body, his relationship with her friends like Bonnie and Clemont would change. Bonnie might be a bit confused as Ash's more boyish and impulsive nature shows through Serena's body. Clemont might be surprised at some of the battle - like decisions Ash makes when dealing with things like helping around the lab. On the other side, if Serena was in Ash's body, her relationship with Ash's rivals like Gary would be different. Gary might be intrigued by the more refined and composed 'Ash' he now sees.