His character could develop in terms of his understanding of different Pokémon types. Since Rayquaza is a Legendary Pokémon, Ash would need to study and understand its unique needs and abilities. This could make him more in - depth in his knowledge of Pokémon in general. He may also become more empathetic as he bonds with Rayquaza on a deeper level.
With a Rayquaza by his side from the start, Ash would be thrust into a different kind of spotlight. He might face envy from other trainers, which could make him more humble as he tries to prove that he's worthy of having such a Pokémon. Also, his relationship with his other Pokémon could change. Some might feel overshadowed at first, but Ash would have to work on maintaining a balanced team, which would further develop his character as a trainer.
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.
One possibility is that Ash discovers a young Rayquaza at the start of his journey. Maybe it's injured and Ash nurses it back to health. This could lead to a strong bond between them, and Rayquaza could become his most powerful Pokémon, helping him in battles against tough opponents like Team Rocket or other powerful trainers.
Ash's character development is quite significant. At first, he might be a bit over - eager and not fully understand Charmander's needs. But as they spend time together, he learns patience. He realizes that Charmander can't always be pushed to its limits right away. His confidence also builds. When they win battles together, he starts to believe in his own abilities more. And his sense of loyalty deepens as he would do anything to protect Charmander.
At first, it might be a bit rocky. Garchomp is a strong - willed Pokémon. Ash would need to earn its respect. He could do this by showing that he's a capable trainer, for example, by strategizing well in battles. As time passes, they would grow closer through shared experiences like exploring new places and facing tough opponents together.
The relationship would develop through communication. Since Latios can communicate telepathically, it could share its thoughts and feelings with Ash. Ash, in turn, would respect Latios's ideas. For example, when choosing which path to take on their journey, they'd discuss and come to a mutual decision. This would make their relationship more equal and deep.
Ash could become more responsible as he has a unique starter that might need special care or training. He'd have to learn new ways to bond with it, which would make him more empathetic towards Pokemon in general. For example, if the starter is shy, Ash would have to be patient and gentle, thus developing his patience.
Their relationship would likely start with curiosity. Female Ash would be eager to learn about Datini's capabilities. As they train together, they would develop trust. For example, when Datini faces a stronger opponent, it would look to Female Ash for guidance and support.
She might develop a more nurturing side compared to male Ash. Since she starts with a Dratini, which is a relatively delicate Pokémon at first, she would be more focused on its well - being. For example, she might spend extra time finding the perfect food for Dratini.
The relationship would likely start with Ash showing kindness and protection towards Larvitar. As they train together and face battles, trust would build. Larvitar would look up to Ash as a leader and friend.
Riolu's personality could develop in a way that it becomes more confident. At first, it might be scared of battles and new situations. But as Ash encourages it and they have small victories, Riolu starts to believe in itself. For example, after winning a small battle against a weak pokemon, Riolu realizes it has the potential to be strong.
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.