There are quite a few on fanfiction websites. Some focus on how Ash's kindness and determination lead to him catching Mewtwo. For example, in a certain fanfic, Ash manages to catch Mewtwo during a battle where he shows Mewtwo that there is more to life than power. He shows Mewtwo the beauty of friendship among Pokémon and humans, which ultimately makes Mewtwo willing to be caught by Ash.
Well, I'm not sure of the exact titles all the time. But generally, in these fanfictions, Ash usually has to overcome many challenges to catch Mewtwo. Maybe he has to face other powerful Pokémon first or deal with some sort of interference from other trainers. Some fanfictions might also explore how Mewtwo's telepathic abilities play a role in the catching process, like it could be both a hindrance and a way for Ash to connect with it on a deeper level.
Themes can vary widely. However, the concept of trust is often explored. How does Ash gain Mewtwo's trust? It could be through his actions in battles, his respect for Pokémon, or his ability to see Mewtwo not just as a powerful entity but as a being with feelings. Additionally, the theme of the underdog (Ash) facing the seemingly unbeatable (Mewtwo) is quite prevalent. It makes for an exciting narrative as we see Ash use his wits and heart to achieve the seemingly impossible task of catching Mewtwo.
One popular Ash and Mewtwo fanfiction might involve Ash befriending Mewtwo in a more in - depth way than in the original series. For example, they could go on a journey together to discover the secrets of Mewtwo's origin. Another could be a story where Mewtwo uses its powers to protect Ash from a powerful new threat that the Pokémon world has never seen before.
One great Ash and Mewtwo fanfiction could be where Ash helps Mewtwo understand the true meaning of friendship. In many fanfictions, they embark on a journey together to save other Pokémon. Ash's kind heart and Mewtwo's powerful abilities make for an interesting combination.
One possible scenario in this fanfiction could be that Ash encounters Mewtwo in a new, uncharted region. Mewtwo, being intrigued by Ash's unwavering spirit, decides to test him. Ash passes the tests with the help of his Pikachu and other Pokemon. This leads to Mewtwo seeing Ash as a worthy trainer and allowing itself to be caught. It would be a great twist on the usual Pokemon-catching storylines.
Well, one possible interesting plot could be Ash using his unique bond with his Pokémon to outwit Mewtwo. Maybe he convinces Mewtwo that not all humans are bad through the kindness shown by his Pokémon team.
There is a fanfiction that focuses on the bond between Ash and Mareep after he catches it. It shows how Ash helps Mareep overcome its fears and grow stronger. It's really heartwarming as it details their adventures together in the Pokémon world.
There's a fanfiction where Ash and Misty are in a Pokémon contest together. In this story, they have to work as a team, and through their shared experiences, their relationship deepens. It's really interesting to see how they support each other during the competition.
One popular 'Ash Catches Eevee' fanfiction might be the one where Ash catches an Eevee in a unique forest setting. The story could focus on the bond they form as they train together for upcoming battles. Another could be a fanfic that has Ash catch an Eevee and then they go on a journey to find different evolution stones for Eevee to choose from.
There's a fanfiction where Ash has to overcome his own fears to catch Eternatus. It shows his growth as a trainer. The way the author describes Ash's determination and how he uses his different Pokémon's skills in the battle against Eternatus makes it an exciting read. Also, some fanfictions might focus on the bond Ash forms with Eternatus after catching it, which is quite an interesting take on the concept.
A 'Ash Catches Frillish' fanfiction could be about Ash catching a shiny Frillish. In this story, the shiny Frillish is very rare and elusive. Ash gets some tips from local Pokémon trainers. He then spends days searching for it. When he does find it, the battle is intense as the shiny Frillish is much stronger than normal. But Ash's determination and the help of his other Pokémon allow him to catch it in the end.