Well, the themes can vary a lot. But a very common one is the exploration of emotions. Fanfictions in this area often look at how Trip's love for Ash affects his actions, decisions, and his overall view of the world. There can also be themes related to friendship, as their relationship starts as a friendship (or a rivalry which has elements of friendship) and then develops into something deeper. And of course, the theme of acceptance, whether it's Ash accepting Trip's feelings or Trip accepting his own feelings.
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.
Well, I'm not sure about a specific one that stands out above all others. But you can try searching on fanfiction platforms. You might find some with really creative takes on Trip being in love with Ash. They often play with the dynamics of their friendship and how it could potentially turn into something more romantic.
Trip's character often becomes more self - aware. His initial focus on being the best trainer might shift slightly as he realizes his feelings for Ash. He starts to see Ash not just as a rival but as someone important in his life.
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.
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.
In some 'pokemon trip saved ash fanfiction', Ash could be caught in a time - warp during his journey. His pokemon are left to figure out how to bring him back. They might encounter ancient pokemon or strange time - related phenomena. This kind of plot is full of mystery and adventure, as the pokemon struggle to understand the concept of time and rescue their trainer.
Ash is definitely one of the main characters since he's the one being saved. His Pokémon, especially Pikachu, are likely to be main characters too as they would probably be involved in the saving process.
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.
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.