Ash's relationship with his Pokémon might become more complex. He could start to question if his Pokémon would still be loyal to him if they knew about his connection to Giovanni. Some of his Pokémon might be wary at first, but over time, they would probably stay by his side because of their bond with Ash.
His relationship could change in terms of training. Ash might start to incorporate some of Giovanni's more strategic training methods (assuming he learns about them). However, his Pokémon might be resistant at first, as they are used to Ash's traditional and more friendly training style. But over time, they could adapt and become even stronger. Also, Ash's Pokémon might have to deal with new rivals associated with Giovanni, which would test their loyalty and determination to stay with Ash.
If Gastly was Ash's starter, his relationship with his other Pokémon might be more diverse. His non - Ghost - type Pokémon would have to get used to Gastly's spooky nature. For example, Bulbasaur might be a bit cautious at first. But over time, they would all learn to work together. Ash would also have to be more creative in his battle strategies, which could bring him closer to all his Pokémon as they adapt to new ways of fighting.
His relationship with Pikachu might become a bit more complex. Pikachu could feel a bit jealous at first because Ash is spending a lot of time getting to know and train Meltan and Poipole. But as time goes on, they all learn to work together. Ash's other Pokémon like Bulbasaur and Charmander might also be a bit curious about the new members. They would start to interact more with Meltan and Poipole during training sessions, which could strengthen the overall bond within the team.
His team might gain some new Kalos Pokémon. For instance, he could catch a Fennekin which later evolves into Delphox. This new addition would bring in new moves and abilities. Maybe he would also trade one of his existing Pokémon for a unique Kalos Pokémon that has a special advantage in the Kalos battles.
Ash and May's relationship would deepen in many ways. With a baby on the way, they would start seeing each other in a new light. Ash, who was always adventurous, would now also think about the safety and well - being of his family. May would find Ash more reliable and loving. They would have to work together to create a stable home environment for the baby. For example, they might argue a bit about which Pokémon should be around the baby when it's born, but through these discussions, their relationship would grow stronger.
At first, his Pokémon would be shocked. They've known Ash as a human trainer, and now he's this powerful psychic Pokémon. The more aggressive Pokémon in his team might see him as a threat to their position in the group. But the loyal ones, like Bulbasaur, would try to understand what happened. Ash, in his new Mewtwo form, would have to use his psychic abilities to communicate in different ways. He might be able to understand his Pokémon's thoughts more deeply, which could either strengthen or strain their relationships depending on how they all adjust.
If Ash was secretly a Pokémon, trainers might view Pokémon in a whole new light. They would see that Pokémon could be more like them, with complex emotions and motives. Also, Ash's relationships with other Pokémon and trainers would be re - evaluated. His Pokémon friends might see him as an equal rather than just a trainer.
His Pokémon might be really confused at first. They're used to Ash as a human, so seeing him as a Pikachu would be quite a shock. But some of them, like Pikachu himself, might feel a closer bond since Ash is now in a similar form.
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.
The story would likely become more about Ash's internal struggle. As a Pokémon, he'd view the world from a different perspective. His goals might shift from winning badges to something more related to Pokémon survival or acceptance. For instance, he may strive to prove that Pokémon with human - like intelligence deserve better treatment.