Well, obviously Bowser and Dark Bowser are the main characters. Bowser is the well - known villain from the Mario series, and Dark Bowser is his darker, more menacing counterpart.
Another possible plotline is that Dark Bowser is actually a part of Bowser that he has been suppressing. The fanfic could explore Bowser's internal struggle as he tries to come to terms with this darker side of himself. It could also show how this affects his relationships with other characters, like Princess Peach and his minions.
In this fanfiction, there are several aspects to consider. Firstly, the power levels of both Ash's Charizard and Tobias' Pokemon are crucial. The battle could be a test of Charizard's skills that it has acquired through various adventures with Ash. Tobias might bring out some unexpected moves or Pokemon. It could also be a story about growth and rivalry. Maybe Ash's Charizard has to overcome some personal challenges during the battle, like dealing with a new type of attack from Tobias. And the outcome of the battle could have far - reaching consequences in the fan - made Pokemon universe.
In the 'ash's charizard vs tobias' fanfiction, the outcome often depends on how the author wants to portray Ash's growth. If the author wants to show Ash as a more developed trainer, Charizard might win through some clever tactics Ash has taught it. However, if Tobias is depicted as a really formidable opponent, it could be a very close call or even end with Tobias' victory, which would then lead to Ash's determination to train harder.
One popular 'ash vs alain charizard fanfiction' might be the one where Ash's Pikachu and Alain's Charizard have a showdown in an unexpected setting like an ancient ruin. It often has intense battles and showcases the unique bond between Ash and Pikachu.
A plot twist could be that during the battle, Ash's Charizard suddenly evolves further, gaining new powers and turning the tide of the battle. Or perhaps Tobias reveals that he has some ulterior motive for the battle other than just winning, like trying to steal Charizard's power.
It's likely a story about the conflict or interaction between a kid and Kat, with perhaps some connection to Bowser's inside story. Maybe it involves the kid facing off against Kat in a world or situation related to Bowser in some way.
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.
Charizard X would likely win. It has a huge power boost in its X form. Its fire attacks can be extremely devastating. Mega Sceptile, while fast and having some good moves, just doesn't have the raw power that Charizard X has. In a fanfiction, Charizard X could swoop down from the sky and unleash a powerful Flamethrower that Mega Sceptile would struggle to dodge. And with its enhanced physical abilities, it could also engage in close - combat if needed.
You can start by searching on popular fanfiction websites like FanFiction.net or Archive of Our Own. Just type in 'ash vs alain charizard fanfiction' in the search bar, and it should bring up a list of relevant stories.