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.
Red is always a popular choice. He's the main character in the original games and has a lot of mystery and strength. People like to write about his further adventures or his relationships with other trainers.
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.
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.
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.
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 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.
Ame is a very popular character to include. She is a key figure in the Pokemon Reborn story, and her complex personality gives a lot of room for fanfiction writers to explore different scenarios.
Gary Oak can be a great addition. He was Ash's rival and his growth and development over the series can add an interesting dynamic to the reunion. Also, Serena is quite popular to include. Her relationship with Ash and her own Pokemon journey make her a relevant character. And of course, the Gym Leaders from different regions can be brought together for the reunion, each with their own unique personalities and Pokemon.
Ash Ketchum is definitely a popular character to include. His long - standing journey as a Pokemon trainer provides a lot of material for fanfiction. Pikachu, his iconic Pokemon, is also a great addition. Another popular character is Misty. Her strong - willed and sometimes fiery personality can add a lot of drama to a short fanfiction. And of course, Brock, with his knowledge of Pokemon and his comical attempts at flirting, is always a fun character to write about.
Red, the main character from Pokemon Red, is always a popular choice. His journey and skills can be further explored in fanfiction. Also, Gold from Pokemon Gold can be a central character. Then there's Professor Oak, who can provide guidance and wisdom to the young trainers in the story. Team Rocket members like Jessie and James are also fun to include as antagonists.