You can start by emphasizing its gentle nature. For example, show how it's always the first to comfort other Pokémon when they're scared. Also, highlight its loyalty to Ash. Maybe it refuses to leave Ash's side even in the face of great danger.
One idea could be that Ash's Bulbasaur gets separated from him in a strange, enchanted forest. As it tries to find its way back, it befriends some local Pokémon that are usually shy and elusive. Another plot could be that Bulbasaur discovers a hidden power within itself during a tough battle. Maybe it can suddenly control plants in a much more powerful way than before.
One possible scenario in this fanfiction could be that Ash's journey takes a completely different turn with Latios as his starter. Latios, being a powerful and intelligent Pokémon, might help Ash quickly gain a reputation in the Pokémon world. They could form a unique bond, different from what Ash has had with his other Pokémon in the original series. Ash could use Latios' speed and psychic abilities to his advantage in battles, making him a formidable trainer right from the start.
One common theme could be the bond between Ash and Bulbasaur. Since in the Pokémon world, they have a trainer - Pokémon relationship, in fanfiction, it might be explored in more depth, especially with the 'lemon' aspect possibly adding a layer of emotional or even romantic undertones.
Well, in many fanfictions about Ash and legendary starter Pokémon, the writers often give Ash a unique bond with these Pokémon. It could be that he has to save a legendary starter from an evil organization. This not only tests his skills as a trainer but also his moral compass. He might learn new techniques or gain access to special areas in the Pokémon world because of this connection. It's a great way to expand on the original Pokémon story and give Ash more depth as a character.
One possible fanfiction could involve Ash starting his journey with a special encounter with Ho - Oh. Maybe Ho - Oh gifts Ash a unique starter Pokémon that has some sort of legendary power. This could completely change the course of Ash's journey, making it more exciting and filled with new challenges as he tries to master the power of this special starter.
In a Pokemon fanfiction with Ash and Mewtwo, it could start with Ash encountering Mewtwo in an unexpected place. Maybe in a hidden forest where Mewtwo is observing the wild Pokemon. Ash, being his curious self, tries to approach Mewtwo. Mewtwo, initially hostile, realizes Ash's pure intentions and they start an unlikely friendship. This could lead to many adventures where Ash and Mewtwo face various challenges together, like battling against a new, powerful and evil Pokemon organization.
One great 'Ash with a powerful starter' fanfiction is 'The Unstoppable Ash'. In this story, Ash gets a super - rare and powerful starter that has unique abilities. It really changes the dynamic of his journey as he faces tougher opponents but also gains more respect in the Pokemon world. It's a thrilling read for any Pokemon fanfiction lover.
In a fanfiction of Ash and Chimchar as a starter, it could focus on their bond. Ash might find Chimchar in a distressed state, having been separated from its group. Ash takes it in and nurses it back to health. As they train together, Chimchar evolves at a crucial moment during a battle against a powerful trainer, saving Ash from defeat.
One great example could be a story where Ash's journey begins with Bulbasaur in a unique way. Maybe in this fanfiction, Bulbasaur is the only starter available in the region, so Ash has no choice but to start with it. This could lead to a whole new set of adventures and challenges as Ash and Bulbasaur form a stronger bond earlier on compared to the original series.