He could find that his relationship with his Pokemon changes. Some Pokemon might be more protective of him now that he's in a more vulnerable form. Others might see him as less of a trainer and more of an equal. Ash would also have to deal with how the Pokemon world views hedgehogs. Are they seen as pests or something more interesting? This could lead to different reactions from different Pokemon species. And as he travels, he might discover new places that are more suitable for a hedgehog - like small burrows or areas with lots of bushes where he can hide and rest.
Well, he might start to see the world from a Pikachu's perspective. For example, he would experience the small size and how everything looks so huge. He could also find it difficult to communicate with his human friends in the normal way since he is now a Pikachu. Maybe he would have to rely on Pikachu's ways of expressing emotions like using electrical signals.
The Pokemon that have been with Ash for a long time, like Snorlax, might have a deeper connection with him and be able to sense that it's still Ash, even though he looks like a hedgehog. Snorlax might be more accepting right away and try to protect Ash from any potential danger. On the other hand, the newer members of his team might be more likely to question whether this hedgehog - like Ash is still their rightful trainer. But as time passes, they would all start to realize that Ash's spirit and his bond with them haven't changed, despite his physical transformation.
He could start to notice things from a different perspective. As a girl, Bakugou might become more aware of the way others perceive her appearance. She might also start to develop different interests, like taking more interest in fashion or something that she previously didn't care about. This could lead to some really interesting character development, especially if she still tries to hold on to her tough - guy (or now tough - girl) attitude.
Well, she might struggle with her newfound vampire nature. Maybe she has a hard time controlling her thirst for blood and accidentally attacks someone she cares about.
In this fanfiction, Ash might take really good care of the Pokemon egg. He would probably keep it warm and safe, waiting eagerly for it to hatch. Maybe he'd even talk to the egg, like he does with his other Pokemon friends.
Well, if Ash gets Darkrai as a starter, he would have a really powerful Pokémon right from the start. Darkrai is known for its ability to induce nightmares and has strong dark - type moves. Ash could use it to quickly gain an edge in battles against other trainers. Maybe he would face some challenges too, like dealing with people who are afraid of Darkrai because of its spooky reputation.
In a fanfiction where Ash turns into a hedgehog, it could be a wild ride. Firstly, his appearance would be completely different. He'd be small and furry with spines. This could make it difficult for him to travel as he used to. His clothing would probably be all wrong for his new form too. Regarding his Pokémon battles, he'd have to come up with new strategies. Instead of standing on the sidelines and giving commands, he might be able to directly participate in a more physical way, using his hedgehog body to dodge attacks or even launch small counter - attacks. It would definitely add a whole new dimension to the Pokémon world in that fanfiction.
Well, one possibility is that he'd have to deal with all the social norms and expectations for girls in the wizarding world. Maybe she'd form different friendships, like getting closer to Hermione in a new way since they'd now share the experience of being female. And she might have a whole new perspective on the boys around her too.
Well, he might start having a different perspective on the magical world. Since sphinxes are known for their wisdom, Harry could use this new form to gain deeper insights into magic. He could also have a hard time communicating with his friends at first, as sphinxes have their own way of expressing things.
Well, he could be used as a bargaining chip. Team Flare might try to exchange Ash for some powerful Pokémon or valuable items. They could also try to force Ash to reveal any secrets he has about powerful Pokémon or rare items he's come across during his travels.