One interesting story could be about their adventures together in a new, unexplored region. They might face unique Pokémon and challenges that test their friendship and skills.
There could be a fanfiction where Red and Yellow team up to solve a mystery in the Pokémon world. Maybe a rare Pokémon has gone missing and they have to use their different abilities to find it. In this story, their individual strengths and weaknesses would be explored as they work towards the common goal.
You can try fanfiction websites like FanFiction.net or Archive of Our Own. They usually have a wide variety of Pokémon fanfictions, including ones focused on Red and Yellow.
One idea could be a story where Red and Blue have to team up to face a new, extremely powerful and mysterious Pokemon that threatens the entire region. They start off with their usual rivalry but gradually learn to trust and rely on each other more as the adventure progresses.
In some fanfiction, the characters from Pokemon Red and Yellow might have their Pokemon swap abilities or forms due to a strange glitch in the Pokemon universe. This leads to a whole new set of adventures as they have to figure out how to control their Pokemon in these unexpected states. They might also encounter other trainers who are both intrigued and envious of their unique Pokemon situations.
Professor Oak can be included. He could be the one who gives Red and Blue important missions or tasks. His wisdom and knowledge of Pokemon can guide the two protagonists in their journey. For example, he might provide them with crucial information about a rare Pokemon they need to find to achieve their goals in the fanfiction.
One popular 'pokespe fanfiction' story could be those that focus on the unique relationships between different Pokemon trainers. For example, stories that explore how trainers from different regions interact and compete.
One popular theme could be adventure. For example, Red and Yellow might embark on a journey through a fantastical land filled with unique creatures. They could be on a quest to find a special item or save their world from a great evil.
One interesting Naruto Red x Fanfiction could be about their adventures together in a new land. Maybe they discover a hidden power that only the two of them can unlock, leading to a series of exciting battles and challenges. They might have to face off against old enemies in a new context, which would be really thrilling.
In some 'Red X DC Fanfiction', Red X could be involved in a time - travel adventure. He might accidentally get sent back in time to when the Justice League was first forming. This would lead to some really interesting interactions as he tries to figure out how to get back to his own time, all while not revealing too much about the future to the heroes and villains of that era.
There are fanfictions where Raven and Red X are pitted against each other in a battle of wits. Red X tries to steal something important from Raven, perhaps an ancient Azarathian artifact that she is protecting. This leads to a series of encounters where each tries to outsmart the other. Raven uses her intelligence and her ability to sense emotions to anticipate Red X's moves, while Red X uses his gadgets and stealth to try and get past Raven. It makes for an exciting read as the reader wonders who will come out on top.
A possible plotline could be that Red and Yellow's paths cross in a more dangerous and mysterious region. They have to work together to uncover a dark secret about a powerful organization that is using Pokemon for evil purposes. This would involve a lot of action, as they battle against the organization's henchmen and try to rescue the captured Pokemon.