Another possibility is Bulbasaur. It has always been a loyal and steady companion to Ash. During the trip, it could see how far they've come together and confess its gratitude for all the experiences and growth they've shared.
Well, in such a fanfiction, perhaps Pikachu might be on this pokemon trip and confess its deep friendship and loyalty to Ash. It could say how much Ash means to it and how their adventures together have been the most important part of its life.
Pikachu is a must - include. It's Ash's most iconic Pokemon and always adds a lot of charm and power to the story. Brock could also be great as he has a lot of knowledge about Pokemon and can offer valuable advice.
Gary Oak is a likely character. He has always been a rival to Ash and in fanfiction, he might betray Ash out of jealousy or a desire to be the ultimate Pokémon trainer. Another could be Misty. Maybe she gets influenced by some external force or her own insecurities and turns against Ash. Brock could also be a candidate in some stories. If he falls in love with a girl who has a vendetta against Ash, he might be forced to choose between his loyalty to Ash and his new love interest.
He'll surely meet the Alola region's professors. Also, the local trial captains are very likely to cross paths with Ash. And of course, the regular Pokémon trainers in Alola.
Gary could be a likely character. He has always been Ash's rival and there could be a plot where his jealousy or some other motive leads him to betray Ash. Another could be one of his so - called friends from the Pokemon League who might be influenced by power or some dark secret. Or, in some really dark fanfictions, it could be a Pokemon that Ash trusted deeply but for some reason turns on him.
The 'pokemon trip saves ash fanfiction' could have a plot where Ash is on a trip to explore a rare Pokémon habitat. However, he underestimates the perils there and ends up in a life - threatening situation. His loyal Pikachu might start the rescue mission. Along the trip, Pikachu could meet other Pokémon who join in the effort. They might use their unique abilities to overcome obstacles and finally reach Ash and save him. For example, a flying - type Pokémon could help them cross a large chasm, and a water - type Pokémon could find a way through a flooded area.
Maybe Dawn could be Ash's date. They have a great friendship and have journeyed together. Their knowledge of Pokemon contests and battles could be a fun part of their date during the trip. Also, Anabel from the Battle Frontier is a possibility. She's a strong trainer, and Ash has had interactions with her. A date with her during a trip to the Battle Frontier or another region could bring some new and exciting dynamics to the story.
Ash is a well - known Pokémon trainer, always eager to catch new Pokémon and battle strong opponents. He has a kind heart and is very passionate about Pokémon. Dawn is another trainer, who is often shown to be determined and has her own unique style of training. In the 'dawn confesses to ash fanfiction', their relationship takes a turn towards the romantic as Dawn decides to be honest about her feelings for Ash.
One key element is the pokemon battles. These are usually intense and detailed, showing off the unique abilities of their pokemon. For example, Ash's Pikachu might use its Thunderbolt against Trip's Serperior.
One interesting plot could be Ash and Trip teaming up to face a powerful new villain in the Pokemon world. They might have to combine their different strategies and Pokemon to succeed.