Well, it could be about Mewtwo, a powerful psychic Pokémon, and Arceus, the creator Pokémon, having a battle of wits. Maybe Mewtwo challenges Arceus' authority in the Pokémon world, leading to an epic showdown where their powers clash and the very fabric of the Pokémon universe is at stake.
Perhaps the main antagonist is an entity that represents chaos and destruction itself. It could be a force that is awakened by the meeting of Mewtwo and Arceus, seeing their combined power as a threat to its existence, and thus tries to stop them from achieving whatever goal they have in the fanfiction.
In a'mewtwo meets mewtwo fanfiction', it could start with the two Mewtwos being summoned by an unknown force. At first, they are confused and defensive. As they interact, they find out that their memories of creation and the pain of being experimented on are very similar. They might then decide to search for the source of this unknown force together. Along the way, they face various challenges, like other powerful Pokémon trying to stop them or humans who fear their combined power. But through their shared experiences and newfound bond, they are able to overcome these obstacles.
Another theme is the power of friendship. Ash's relationship with his Pokemon is central. When he meets Arceus, his Pokemon friends might play a crucial role in the encounter. For example, Pikachu could use its electric attacks to protect Ash if there's any danger during the meeting.
Well, the plot could involve Ash getting transported to a special realm where Arceus resides. Maybe Arceus sees something special in Ash and decides to test him. Ash could be given tasks that are related to saving the Pokemon world from a great danger that only he, with the help of Arceus, can prevent.
It could be a new, powerful and evil Pokemon trainer. This trainer has a dark past and wants to use Mewtwo's power for his own selfish and destructive purposes. He might try to capture Mewtwo by any means necessary, seeing it as the ultimate weapon to dominate the Pokemon world.
In such a fanfiction, Ash might gain some extraordinary powers. Since Arceus is a very powerful Pokemon, it could bestow upon Ash the ability to understand all Pokemon languages instantly. This would give him an edge in his Pokemon journey, allowing for deeper connections with his Pokemon and better strategies in battles.
One idea could be that Ash and Mewtwo form an unexpected bond. Mewtwo, being so powerful, could initially be distrustful of Ash. But Ash's pure heart and determination slowly break through Mewtwo's defenses. They might go on a journey together to stop a new evil threat that is targeting Pokemon with strong psychic powers. Another plot could involve Mewtwo using its powers to help Ash understand some of the mysteries of the Pokemon world that he has been curious about for a long time.
Well, it's possible that Ash and Mewtwo team up in the fanfic. They could face a common enemy together. Mewtwo's incredible psychic powers combined with Ash's experience and determination would make them a formidable duo. And perhaps this encounter would change Ash's view on some things, like the true nature of Pokémon battles.