I'm not sure if there is a specific fanfic with that exact title, but it's a very plausible concept. Given Ash's determination and his ability to bond with his Pokémon, he could potentially find a way to secretly defeat Lance. It might involve some subterfuge, like using a Pokémon that Lance doesn't expect Ash to have trained well, or a new battle tactic that catches Lance off - guard.
Perhaps he defeats some of the Elite Four members who are participating in the league. They are known for their strength, so it would be a huge accomplishment. And of course, any recurring rivals from his past adventures like Trip or Paul.
The unexpected is what makes it interesting. Usually, Lance is seen as this super - powerful trainer. So seeing Ash, who has his own journey and growth, defeat him is a big deal. It's like an underdog story.
I'm not sure of a specific 'ash defeats tobias fanfiction' off - hand. You could try searching on popular fanfiction websites like FanFiction.net or Archive of Our Own. Just type in the keywords 'ash defeats tobias' in their search bars, and you might find some great stories.
One possible plot could be that Ash trains extra hard with his Pokémon, focusing on their weaknesses and strengths. He might discover a new battle strategy that Tobias has never seen before. Then, in a grand battle, Ash's Pikachu could start with a powerful electric attack that catches Tobias's Darkrai off - guard, and from there, Ash gradually overcomes Tobias's other Pokémon with his well - planned moves.
In this fanfiction, it could be that Ash has a really good strategy. He might first make Gyarados use up a lot of its energy by making it attack Charmander's illusions or decoys. Then, when Gyarados is tired, Charmander can step in with its full power. Charmander could also use the environment to its advantage. Maybe there are some flammable objects around that can be set on fire by Charmander, creating a more powerful and widespread fire attack that Gyarados can't avoid.
Well, try searching on specialized Pokémon fanfic forums. There are often communities of fans who share and discuss their own fanfics. They might be able to point you in the right direction. Also, check out social media groups dedicated to Pokémon fanfiction. Sometimes, writers will promote their works there.
One common theme is competition. Since it's Ash vs Steven, there's always a sense of who is the better trainer. Another theme could be friendship. Even in their rivalry, they might develop a mutual respect.
One common theme is friendship. They come from different universes (Pokemon and Steven Universe), so fanfics often explore how they become friends and support each other. For instance, Ash could teach Steven about Pokemon battles, and Steven could share his knowledge of gems with Ash.
Well, you can try searching on fanfiction websites like Archive of Our Own. There are often many well - written 'ash x steven' fanfics there. Just use the search bar and type in 'ash x steven' and you'll get a list of relevant stories.