One possible plot could be that Ash discovers a new Pokémon that has a special ability to counter Tobias's Legendary Pokémon. For example, a Pokémon with a type advantage that Tobias has not faced before.
A very interesting plot could be that Tobias challenges Ash to a series of battles, not just one. Ash has to constantly adapt and change his team and strategies. Along the way, Ash meets some other trainers who have faced Tobias before and they give him tips. In the final battle, Ash combines all the knowledge and skills he has gained throughout the series of battles to defeat Tobias. This would show Ash's growth as a trainer and his determination to overcome any obstacle in his path to becoming a Pokémon Master.
In a fanfic of Ash vs Tobias, Ash could finally defeat Tobias. Ash has grown so much throughout his journey, and this could be his moment to prove that his bond with his Pokémon is unbeatable. Maybe Pikachu evolves mid - battle to a new form and gives Ash the edge to win.
In 'ash vs tobias fanfic', there are several common themes. Firstly, the journey of self - discovery. As they battle, both Ash and Tobias might learn more about themselves, their strengths, and weaknesses. Secondly, friendship is an interesting theme that can be explored even in a competitive context. Maybe they start as rivals but develop a certain kind of friendship. And of course, the theme of victory and defeat, which is very typical in stories centered around battles.
The main characters are obviously Ash and Tobias. Ash is the well - known Pokémon trainer from the Pokémon series, always eager to learn and grow. Tobias, on the other hand, is a formidable trainer known for using powerful Legendary Pokémon.
A plotline could involve a special Pokemon that both Ash and Paul are interested in. They might compete to catch it, which could involve a series of challenges and battles. Or, perhaps there's a new type of Pokemon training technique that one discovers and the other tries to learn from or outdo. This could create an interesting dynamic in the fanfic.
One possible storyline could be that Alexa is researching a rare Pokemon in a region. Ash arrives in the same region on his journey. Their paths cross and they end up in a friendly competition to see who can find and catch the rare Pokemon first. Along the way, they have battles with other trainers and help each other out in tough situations.
Well, it could involve Ash using his new Pokémon strategies that he has developed since their last encounter. Maybe he has some rare Pokémon now that he didn't have before. Tobias, on the other hand, might have also upped his game. The rematch could be set in a grand stadium, with lots of fans cheering for Ash, hoping he can finally defeat Tobias who was such a tough opponent last time.
One interesting plot point could be the different strategies Ash and Tobias use in their battle. Ash might rely on his bond with his Pokémon while Tobias could use his powerful Legendary Pokémon in unexpected ways.
One possible plot is that Latias is injured and Ash finds it. He nurses it back to health, and during this process, they form a bond. Latias then decides to join Ash's team. Another plot could be that there is a tournament where the prize is a special item that can attract Latias. Ash enters the tournament, wins, and uses the item to catch Latias.
A plot twist could be that Charizard evolves during the battle. This would give it new powers and abilities, completely changing the course of the fight. It would be a huge shock to Tobias and would add a new level of excitement to the fanfiction.
I'm not sure of specific 'ash vs tobias fanfic' to recommend off - hand. You could try searching on fanfiction websites like Archive of Our Own or FanFiction.net. There might be a good number of stories there with that pairing.