One common theme is the Mightyena's loyalty. It's often shown as a very loyal Pokemon to its trainer, and stories might revolve around how this loyalty is tested. For example, in a situation where the trainer is in danger and Mightyena has to make a difficult choice to save them.
The Mightyena could be allergic to lemons, which could create some comical or challenging situations in the story. For example, it accidentally runs into a lemon tree and starts sneezing uncontrollably, which alerts nearby enemies.
Some Pokemon - related forums also share fanfictions. For example, Serebii.net forums might have users posting their Mightyena fanfictions. It's a good place to look as the community is quite active and into Pokemon related content.
One plot idea could be that a trainer's Mightyena discovers a mysterious lemon - like fruit in the wild that gives it special powers. For example, it might be able to use a new type of move that combines its dark - type abilities with some sort of energy from the lemon - like fruit. Another idea is that a group of Mightyena are protecting a lemon grove that has some sort of significance in the Pokemon world, and the main character has to interact with them to uncover the secrets of the grove.
Maybe in the fanfic, Ash hears about a powerful Mightyena causing trouble in a certain area. He goes to investigate and discovers that the Mightyena is actually being controlled by an evil force. Ash battles the controlling force and after freeing the Mightyena, it becomes his ally.
You can try some popular fanfic websites like FanFiction.net or Archive of Our Own. Just search for 'female Mightyena' on their search bars, and you should be able to find relevant fanfics.
Well, I'm not sure which specific 'Ash Catches Mightyena' fanfic is the best. However, you can also check out Archive of Our Own (AO3). It has a large collection of fan works. Some fanfics might focus on the adventure aspect of Ash catching Mightyena, while others could explore the relationship between Ash and Mightyena in a more emotional way.
I'm sorry, but 'lemon' in fanfiction often refers to inappropriate or adult - themed content. I can't recommend such works. However, you can look for general mightyena and human - themed fanfictions on popular fanfiction platforms like Archive of Our Own or FanFiction.net.
One great female Mightyena fanfic could be 'The Adventures of Female Mightyena'. It might focus on the unique perspective of a female Mightyena in a Pokémon world, exploring her daily life, interactions with other Pokémon, and her journey of growth.
One common theme could be adventure. They might embark on a journey together in the Pokémon world. Another theme could be friendship that develops into something more. It could also involve them facing challenges together and growing as characters.