Some of the starter Pokemon also gain a lot of popularity. Pikachu from Red's side is a fan favorite, and Bulbasaur or Charmander from Green's possible starters can also be central characters in fanfictions. For example, a fanfiction might focus on how a Bulbasaur evolves and becomes a powerful Venusaur, and how it impacts the relationship between the trainers of Red and Green.
Red and Green themselves are often very popular. Red, being the determined and skilled trainer, and Green with his more strategic and sometimes cocky approach. Their dynamic as rivals - turned - allies (in some stories) is really appealing.
Red is often very popular. He's the main character in the original games, so in fanfiction, people like to explore his adventures further, like his battles against powerful Gym Leaders in more detail.
Definitely Red and Green themselves. They are the iconic protagonists of the original games, so including them can add a lot of authenticity to the fanfiction. Also, Professor Oak is a popular choice as he is the wise mentor figure. And of course, Pikachu is always a fan favorite to include, whether as a main character's Pokemon or just making appearances throughout the story.
Blue, Red's rival from Pokemon Red, also has a significant presence in the fanfiction. His competitive nature and his own skills as a trainer make for great storylines. In some fanfiction, he might be shown to have a change of heart or form an unexpected alliance with Red. Also, the various gym leaders from both games can be popular characters. For example, Brock, the rock - type gym leader, could be depicted in new and interesting ways in the fanfiction, like having a secret super - strong Pokemon that he never reveals in the original games.
Some original characters created by fanfiction writers can also gain popularity. For example, a young trainer who starts their journey in the Pokemon Red world with a big dream but has to face many difficulties. Their growth and development throughout the story can attract a lot of readers.
Red is often a popular character in pokemon green x blue fanfiction. Since he has his own story in the main games, his appearance in the fanfiction, especially in relation to Green and Blue, can add a lot of depth. Another popular character is Green's rival, who is often depicted as having a complex personality, being both competitive and sometimes showing a softer side.
Ash Ketchum is also very popular. He is the main character in the Pokemon anime series that is based on the Red, Blue, Green and Yellow games. Fanfics often explore different versions of his journey, like what if he made different choices during his Pokemon battles or when choosing which Pokemon to catch. Also, Misty is quite popular. Her feisty personality and her love for water - type Pokemon make her a great character for fanfic writers to explore different storylines with, such as her own solo adventures or her relationships with other characters.
Red is an obvious choice. He's the main character in the games, and his journey through the Kanto region can be further explored in fanfiction. Maybe tell a story about his training methods or his relationships with other trainers that weren't fully shown in the game.
Another theme is their friendship that develops over time. It could start from their initial clashes as rivals but then grow into a deep bond as they face bigger challenges in the Pokemon world together. This often involves them helping each other out in tough situations, like when facing a powerful and rare Pokemon or dealing with a villainous team. The evolution of their relationship is a rich area for fanfiction writers to explore.
The Legendary Pokemon like Groudon and Kyogre are also popular characters in the fanfiction. Writers often create stories around their power, their history, and how they interact with the human characters. For instance, a story could be about a trainer who has to prevent Groudon and Kyogre from clashing again and destroying the Hoenn region.
Blue is also quite popular. In fanfiction, his rivalry with Red can be intensified or even given a new twist. Maybe they have to team up against a greater threat, which makes for some really engaging character dynamics as they put aside their differences.