In this fanfiction, Ash's character would develop in several ways. First, he'd become more empathetic towards Pokémon that are seen as difficult or 'bad tempered' like Deino. He'd have to understand Deino's needs and fears to build a strong bond. Also, his leadership skills would improve as he'd need to lead Deino in battles and on their adventures. He might also become more resourceful, finding new ways to keep Deino happy and healthy, like searching for specific types of food that Deino likes.
Ash's character would likely become more confident. Starting with a Charizard, which is a very powerful Pokémon, would give him an edge in battles. He would also become more patient as Charizard can be difficult to train at times. For example, when Charizard refuses to listen, Ash would have to find new ways to communicate and gain its respect.
Ash would likely become more responsible. Since Dratini is a relatively rare and potentially powerful Pokémon, he'd have to take extra care. This could make him think more before acting in battles and other situations.
A plot could involve Ash starting his journey with a Deino. Deino being a rather unique and not so common Pokémon. They could face challenges in training it as it's a bit wild at first. Ash might have to find special ways to bond with it, like exploring caves together which is a natural habitat for Deino. And through their adventures, they meet new Pokémon and trainers, with Deino gradually evolving and becoming a stronger part of Ash's team.
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.
Their relationship might start with Ash showing kindness to Axew. Axew, being young and impressionable, would quickly grow to trust Ash. Ash would then start to train Axew, and as Axew learns new skills, their bond would strengthen. They would share adventures, face difficulties together, and rely on each other for support. Over time, they would become like family.
In this fanfiction, Ash could develop better strategic thinking. Froakie's abilities would force Ash to come up with new battle plans. He'd study Froakie's moves and how they can be combined in different ways, thus enhancing his strategic skills. He may also become more empathetic towards Froakie as he discovers more about its nature and feelings, leading to a more well - rounded character.
Ash would likely become more confident with a Rayquaza as his starter. Having such a powerful Pokémon would give him an edge in battles, and he'd grow in his leadership skills as he commands Rayquaza. He might also become more responsible, knowing that he has to take care of such a rare and strong Pokémon.
Ash might become more conflicted. He has always been on the side of good, but with Giovanni as his father, he'd have to grapple with his family ties. He could become more secretive and brooding as he tries to figure out how to balance his own values with this newfound family connection.
Ralts could make Ash more empathetic. Since Ralts is a very sensitive Pokémon, Ash would need to be more in tune with its feelings. This would cause him to be more understanding of all Pokémon in general.
Ash would likely be more confident from the start. Since he has a powerful Charmander, he might be more eager to take on stronger opponents. He would also have to learn how to handle a Pokemon with such great power, which could make him more responsible.