A common plotline could be Ash training Garchomp to become stronger for a big Pokémon league. He might face various challenges during the training process, like finding the right moves and strategies for Garchomp.
I really like the fanfiction where Ash and Garchomp team up to face a powerful, ancient Pokémon. In this story, the author does an amazing job of showing how Ash's training and Garchomp's strength combine to overcome seemingly impossible odds. It's full of action and adventure.
There are also some Pokémon - focused fanfiction communities on Reddit. You could post a request for 'Ash has a Garchomp' fanfiction there. There might be some fans who have written or know of some great stories. Some of the Reddit - based fanfiction can be really creative, like a story where Ash and Garchomp end up in a different dimension and have to find their way back home together.
It could be that Garchomp is in some sort of danger, like being trapped or injured. Ash, being the heroic character he is, steps in to rescue it. Maybe Garchomp is facing a powerful enemy and Ash uses his Pokémon and his own wits to save it.
The popularity of Ash and Garchomp fanfiction lies in their unique dynamic. Ash is a well - known and beloved trainer, and Garchomp is a powerful and cool - looking Pokémon. People love to explore how they interact and form a bond.
Mega Garchomp can be characterized as a powerful and intimidating presence. Its large size and sharp claws give it an edge in battles. But it can also be shown as having a gentle side, especially towards Ash. For example, it might nuzzle Ash when it's happy or let Ash ride on its back during travels.
A plotline might involve Ash being betrayed by a new acquaintance he meets on his journey. This person could pretend to be his friend, gain his trust, and then use that trust to steal his Pokémon or important items. Or perhaps Ash is betrayed by a Pokémon he just caught. The Pokémon could have been planted by an enemy trainer to spy on Ash and then turn on him at a crucial moment.
A possible plotline could be that Fennekin is a rare and special Fennekin that only appears in a certain region. Ash hears about it and goes on a quest to find it. After a long search, he finally encounters Fennekin. Through a series of events, like helping Fennekin out of a dangerous situation, he earns Fennekin's trust and catches it.
One possible plotline could be that Ash is raised by Arceus to be a sort of Pokémon messiah. He is taught the true essence of Pokémon and is sent on a quest to save the Pokémon world from an impending doom.
Another plotline might involve Ash teaming up with some of the Team Rocket members, perhaps reluctantly at first. They could be forced to work together due to a common threat to both the good guys and the bad guys in the Pokemon universe. This would lead to some interesting character developments for Ash as he has to deal with the not - so - good nature of Team Rocket.
One possible plotline could be that Ash captures Suicune in an unexpected way, like during a special event in a new region. Then he has to deal with the consequences of having such a powerful and rare Pokémon, like other trainers being jealous or wanting to challenge him for it.