The evolution list of Pokemon Digimon is as follows:
1. Gengar: No evolution form, just an ordinary genie.
2. Bulbasaur: Evolved from insect form to grass form, and evolved into Bulbasaur.
3. Little Tyrannosaurus (Sbasaur): Evolved from insect form to water form and became Little Tyrannosaurus.
4. Little Elven King (Charmander): Evolves from Fire Form to Wind Form and becomes the Little Elven King.
5. Charmander: Evolves from fire form to insect form and becomes the Charmander.
6. Pikachu: Evolved from insect form to fire form and then Pikachu.
7 Pikachu (Pikachu): Evolved from Fire Form to Electric Form, and then Pikachu.
8. Electric Dragon (Pokémon Diamond & Pearl): Evolves from dragon form to electric dragon.
9. Electric Dragon (Pokémon Diamond & Pearl): Evolves from Dragon Form to Fire Dragon Form and becomes Electric Dragon.
10 Fire Dragon (Pokémon Pearl): Evolves from dragon form to insect form and becomes a fire dragon.
11 Fire Dragon (Pokémon Pearl): Evolves from insect form to water dragon form and becomes a fire dragon.
12 Water Dragon (Pokémon Diamond & Pearl): Evolves from dragon form to water form and becomes a water dragon.
13 Water Dragon (Pokémon Diamond & Pearl): Evolves from water form to fire dragon form and becomes a water dragon.
[14. Ultra Dream: Evolves from dream-like form to super dream form. After evolution, it becomes super dream.]
15 Ultra Dream: Evolves from the Super Dream form to the Dream form and becomes the Super Dream.
It could be a scientist who is involved in the study of Pokemon genetics. While trying to understand the mechanics of evolution better, they accidentally stumble upon the new evolution and then become involved in the events that unfold as a result, both in the scientific and the trainer communities.
It could also revolve around a genetic experiment gone wrong that accidentally creates a new form of evolution for some Pokemon. These newly evolved Pokemon are initially feared but eventually prove to be helpful in a crisis situation, teaching the humans and other Pokemon the importance of acceptance and adaptability.
In fanfiction, Pikachu's Mega Evolution often brings out new and exciting abilities. Writers might imagine Pikachu growing larger, with enhanced electric powers. It could have the ability to create more powerful thunderbolts or even manipulate electricity in new ways, like forming shields or sending out electric waves to paralyze opponents from a greater distance.
In a fanfic about Meowth evolving, it could be that a powerful enemy forces Meowth to adapt and evolve in order to protect its friends. This evolution might give it new abilities and a different appearance, perhaps more intimidating to foes.
One idea in fanfiction could be that Ash discovers a special item that enables his Charizard to mega evolve again, but into an even more powerful form. This new mega form might have different coloration and enhanced fire - based abilities. It could breathe a type of blue - flame that is hotter and more destructive, making it a force to be reckoned with in battles.
The fanfiction could also explore the emotional side of Charizard's mega evolution. Ash and Charizard have a deep connection, and the mega evolution could be a significant milestone in their relationship. Charizard might struggle with the new power at first, feeling a bit out of control. Ash would then have to help it regain confidence and master its new form, which would be a really heart - warming and exciting part of the story.
A fanfiction named 'Ash's Mega - Evolved Team' might be interesting. It focuses on how Ash builds a team specifically for Mega Evolution battles. Each of his Pokemon has a unique Mega Evolution arc, and the story shows how he trains them to master this powerful transformation.
One possibility could be that Meowth evolves after a deep emotional experience. Maybe it befriends a Pokémon that is in great danger and through the process of saving it, Meowth unlocks a new level of power within itself and evolves. This could lead to a whole new form with different abilities and a more noble appearance.