Here's a plot idea. There's a new Pokemon trainer in town who only wants to catch Pikachu and Mimikyu. They keep running away from the trainer and end up in an old, abandoned Pokemon sanctuary. There, they find out about the history of the place and some secrets about their own species. They also meet some old and wise Pokemon who teach them new moves. Eventually, they outwit the trainer and decide to stay friends and protect the sanctuary from any harm in the future.
One possible plot could be that Mimikyu is jealous of Pikachu's popularity. However, instead of becoming enemies, they end up in a situation where they have to rely on each other. For example, they get lost in a strange part of the Pokemon world. Through this experience, Mimikyu realizes that popularity isn't everything and Pikachu learns to see Mimikyu's true value.
Well, it could be a story of rivalry at first. Pikachu is quite popular among trainers and other Pokemon, while Mimikyu is often overlooked or feared. Mimikyu might envy Pikachu's status and decide to challenge it to battles. But during these battles, they start to understand each other better. Pikachu realizes that Mimikyu is just lonely and wants some attention. So instead of fighting, they end up working together to help other Pokemon in need. For example, they might save a group of Pichu from a landslide by using their combined electric powers.
One plot twist could be that Mimikyu's disguise is actually a magic spell that was cast on it by an evil Pokemon, and Pikachu has to find a way to break the spell.
Well, it could be about Pikachu befriending Mimikyu. Maybe Pikachu discovers that Mimikyu is not as scary as it looks under that disguise. They could go on adventures together in the Pokemon world, like exploring a new forest or finding a rare Pokemon.
For Pikachu, remember it's energetic and friendly. It often shows its emotions through its electric shocks, like when it's excited or scared. Pikachu loves to play and is very loyal to its trainer. Mimikyu, on the other hand, is a bit more mysterious. It's shy because it's self - conscious about its appearance. It hides under its disguise. Mimikyu can be a bit envious at times but also has a big heart deep down.
Both of them could learn about the importance of individuality. Pikachu might realize that being different like Mimikyu is not a bad thing, and Mimikyu could understand that it doesn't have to be exactly like Pikachu to be accepted. They could both grow to appreciate their own unique qualities as well as those of each other.
A fanfic involving Pikachu and Porygon might focus on their friendship. Pikachu, being the more outgoing and energetic one, could introduce Porygon to the joys of playing in the grass and chasing butterflies. Porygon, on the other hand, could show Pikachu the amazing digital landscapes it can access. Their friendship could grow as they learn from each other's worlds, and together they could face challenges like an evil Team Rocket plot to capture both of them.
In a Porygon and Pikachu fanfic, their different abilities would play a big role. Porygon, being a digital Pokemon, might have the power to manipulate data. Pikachu, on the other hand, is known for its speed and electricity. The fanfic could start with them meeting in an unexpected place, like a forest that has some strange digital glitches. Then they have to work together to figure out what's going on. Maybe they discover that a new villain is trying to use Porygon's digital powers for evil, and Pikachu has to protect it.
A plot could revolve around Pikachu getting sick and Lillie using her knowledge of Pokémon care to nurse it back to health. During this time, they develop a deep friendship. Then, they notice some strange behavior in other Pokémon around them. Together, they start to investigate and find out that there is a pollution source affecting the Pokémon. Lillie and Pikachu then try to find a way to clean up the pollution and restore the health of the Pokémon in the area. This would show their caring and adventurous sides.
Friendship is a very common theme. Since Mimikyu is often a bit of an outsider and Pikachu is so well - known, many fanfics focus on how they can become friends despite their differences.