Well, for Toxapex in the story, I'd say a great moveset is Venoshock, in addition to Recover, Toxic Spikes, and Haze. Venoshock deals more damage when the target is poisoned, which pairs well with Toxic Spikes. Recover, of course, is there to keep Toxapex alive. Haze can be used to clear out any stat changes on the field, which can be really handy in certain story battles.
One effective moveset for Cofagrigus could be Shadow Ball, Will-O-Wisp, Protect, and Toxic. These moves give it a mix of offensive and defensive capabilities.
Some fanfictions could focus on their evolution journey. For example, how a Kirlia decides to evolve into Gardevoir or Gallade based on different circumstances. It could be a story of self - discovery and choice, where the Pokemon's personality and experiences play a crucial role in the evolution decision.
Gallade and Gardevoir's love story began in a unique way. Gardevoir was known for her psychic powers and grace. Gallade, with his strong fighting abilities, was in awe of her. One day, while they were both in a Pokémon center, Gallade mustered up the courage to talk to her. They found they had a shared love for the beautiful meadows in the region. They would often go there together, Gardevoir using her powers to create beautiful flower displays while Gallade would stand guard. Their bond deepened over time, and it was clear that they were meant to be together.
Gallade and Gardevoir fanfictions often explore their relationship with their trainers in unique ways. A trainer might have a special bond with one of them, like a trainer who has a Gardevoir that was his first Pokemon. This Gardevoir could be extremely protective of the trainer and their adventures together could be filled with heart - warming moments.
Well, perhaps it could start with them meeting in a beautiful, enchanted forest. Gardevoir might be drawn to Gallade's strong and noble presence, while Gallade is charmed by Gardevoir's grace. They could then go on adventures together, protecting the forest and its creatures, and their love could grow as they face challenges side by side.
One common theme is loyalty. They are both likely to be loyal to their trainers and to each other in the fanfic. Another theme could be the power of psychic abilities. Since they are both psychic - type Pokemon, the fanfic might focus on how they use their powers in different ways.
One possible theme could be friendship. Ash often has strong bonds with his Pokémon, and in a Gallade fanfic, it could be about the friendship between Ash and Gallade. Maybe they go through adventures together and support each other.
Archive of Our Own (AO3) is another great place to search. It has a large collection of fanfics, and you can use the search function to specifically look for female Gallade fanfic. You can also filter by tags such as 'female Gallade', 'Pokémon', etc.
The description of Gallade's character is crucial. Since it's a Pokemon with unique abilities and a distinct appearance, the fanfic should do justice to it. For example, it could describe how Gallade uses its psychic powers in relation to the reader, or how its blade - like arms are part of their interactions. Also, a good plot that takes the relationship in an interesting direction, whether it's an adventure they go on together or a problem they solve, makes the fanfic great.