In addition to Ash, May would be a key character. She has her own goals in Hoenn, like competing in contests, and her presence could add a different dynamic to Ash's journey. Then there's Max, May's little brother. He could be the one who always has some interesting facts about Hoenn's history and Pokemon. And of course, Team Aqua and Team Magma members could be important characters as they create various challenges for Ash throughout the story.
Definitely May. Since it's in Hoenn, she's a likely character. She might start as a rival to Ash but then they become friends. Also, Professor Birch could play an important role. He could be the one guiding Ash in his initial days in Hoenn, providing him with his first Pokemon and some basic knowledge about the region.
May could be one of the main characters. She could join Ash on his journey and share her knowledge about Hoenn's Pokemon with him. Another could be Brock, still tagging along to offer his expertise in Pokemon care.
One possible plot could be Ash starting his journey in Hoenn, meeting new Pokemon like Treecko as his first partner. He might encounter Team Aqua or Magma early on and get involved in their schemes to control the weather or the land. He'll also face gym leaders, learning new battle strategies along the way.
Brock could also be a main character. Since he has knowledge about Pokémon care and breeding, he could be Ash's colleague in the fanfiction. They could work together on projects related to Pokémon health and nutrition.
Latios would obviously be a key character. Also, Pikachu, Ash's loyal Pokémon partner, would be there. Maybe Misty or Brock could also be part of the story, with them either supporting or being skeptical of Ash's newfound admiration for Latios.
A young girl named Mia might be a character too. She is also a Glacion fan and is very competitive. She challenges Ash to various Glacion - related challenges, like a Glacion knowledge quiz or a race to find a hidden Glacion item in the forest.
Well, Pikachu could still be a main character. Even if Ash hates everyone, Pikachu might be the one trying to bring back the old Ash. Maybe Team Rocket could also be main characters. They are always around Ash, and his new - found hatred could make their interactions even more interesting. They might be confused by his change or even try to take advantage of it.
His best friend from before the war could be a main character. This friend might have been waiting for Ash's return and now has to deal with the changed Ash.
Mallow is another great choice. With her love for cooking and Pokémon, she could use her skills to create special Pokémon food for Ash's team. This could lead to some fun and heartwarming moments between them, and also bring the whole harem together as they enjoy the food.
It could be that there is a young, impressionable character who looked up to Ash Aura. After the betrayal, this character is confused and starts to question his own beliefs. There might also be a powerful mage in the story who has the ability to see the truth behind Ash Aura's actions and is trying to prevent the chaos that the betrayal has caused.
Pikachu would definitely still be there. It's Ash's most loyal companion, and it would be interesting to see how their relationship might change now that Ash is a girl. Maybe Pikachu would be more protective or show a different kind of affection.
His Pokémon, like Pikachu, would surely be important characters. Pikachu might be the first to suspect that Ash is not really dead and start searching for him. Misty and Brock could also be main characters. They are Ash's long - time friends and would be deeply affected by his supposed death. They might be the ones to uncover the truth behind his faked death and help him in his plan, or they could be completely in the dark at first and then gradually figure things out.