One of the popular characters might be the main Pokedex holder, who is often depicted as brave and curious. Another could be a rival Pokedex holder, adding some competition and drama to the story. Also, some of the Gym Leaders or Elite Four members from the original Pokemon series might make appearances and be popular in these fanfics as well.
Misty is also a character that shows up a lot. Her knowledge of water - type Pokemon can be combined with her role as a Pokedex holder. Fanfictions might explore her adventures in different regions, her encounters with new Pokemon, and how she uses the Pokedex to learn more about them.
There could be stories about the adventures of different Pokedex holders. For example, they might encounter rare Pokemon, explore uncharted regions, or face off against powerful villains. The Pokedex holders could also have unique relationships with their Pokemon that are explored in these fanfics.
One interesting story could be about a Pokedex holder's journey to discover a rare and powerful Pokemon. They might face various challenges and meet unique characters along the way.
Another theme is the exploration of the Pokemon world. Fanfictions often take the characters on new adventures in different regions. They might discover new Pokemon species or hidden places. It gives readers a sense of the vastness and mystery of the Pokemon universe. Also, self - discovery is a theme. Trainers learn more about themselves as they face challenges and grow stronger with their Pokemon.
One idea could be a story where a trainer discovers a hidden or rare Pokemon in the Unova region that isn't fully documented in the Pokedex yet. Another could be a fanfiction that focuses on the backstories of the Unova Pokedex creators and how they came to know about all the Pokemon in the region. Maybe a story about a Pokemon that has a special ability that changes how it's classified in the Pokedex.
One interesting Pokemon Red and Blue love fanfiction could be about Red and Blue's adventures together which gradually turn into a romantic relationship. For example, they start off as rivals, constantly competing in battles. But as they face tougher challenges in the Pokemon world, like against the evil Team Rocket, they begin to rely on each other more and more. Their mutual respect and admiration then develop into love.
The main characters are usually Red and Blue. Red is often depicted as the more quiet and determined trainer, while Blue is more outspoken and competitive. Sometimes, their Pokemon also play important roles as secondary characters, like Red's Pikachu or Blue's Eevee (if you choose to give them those particular Pokemon).
Well, it might be that Blue Oak is a character who has a rivalry with the main protagonist in the Red Pokemon fanfic. They could compete in Pokemon battles, and Blue Oak's unique strategies and Pokemon team could be a central focus. For example, he might have a team of Pokemon with special abilities that are not commonly seen in the regular Pokemon games, which makes his battles really exciting to read about.