Another common main character is the rival trainer. In Pokemon new girl fanfiction, this rival could be a more experienced trainer who at first underestimates the new girl but later becomes her friend or a friendly competitor. There could also be a Gym Leader who takes the new girl under their wing and helps her in her journey, becoming an important character in the story.
The new girl herself is obviously a main character. She could be a shy girl who gradually becomes more confident as she trains her Pokemon. Often, her first Pokemon, like a Eevee or a Bulbasaur, can also be considered a main character as it grows and develops alongside her.
Another common main character could be a Pokemon researcher. They enter the strange house not just for adventure but to study the unique Pokemon or phenomena that are associated with the house. Their knowledge helps in understanding the strange happenings and they might also have a Pokemon partner that aids them in their exploration.
Misty is another character that can be paired with Brock. Their dynamic in the show was quite interesting, and in fanfiction, it could be developed further. For example, they might have an adventure where they have to rely on each other's skills more than ever before.
In some fanfictions, Harley could be paired with new original characters created by the author. These new characters could be trainers who are either inspired by Harley or are trying to stop his more devious plans in the Pokemon contest circuit.
Often, the main character is an exiled pokemon itself. It could be a Pikachu that was exiled for accidentally causing a power outage in a major pokemon city. Another common main character could be a trainer who is sympathetic to the exiled pokemon and decides to help them.
Well, Proton himself is obviously a main character. He's often the center of the story, whether it's about his actions within Team Rocket or his possible transformation. Then there are often Pokemon characters. His own Pokemon, if he has any in the fanfiction, would be important. For example, his Houndoom could play a significant role.
Ash and Serena are often the main characters. Their relationship in the Pokemon anime has a lot of potential for amorshipping fanfiction. Ash's determination and Serena's grace make for an interesting dynamic in the stories.
Often, young and ambitious trainers are involved. They might be curious about Pokemon abilities and conduct their own little experiments. Scientists also play a big role. They usually have the resources and knowledge to carry out more complex experiments on Pokemon in a more formal setting.
The main characters could include the new girl, a group of her new friends she meets on her Pokemon journey. Maybe one of her friends has a really powerful but mischievous Pokemon. And also, an antagonist in the form of a rival trainer who is always trying to outdo her.
In some 'pokemon champion ash fanfiction', Gary could be an important character. He has always had a competitive relationship with Ash, so in stories where Ash is a champion, Gary might try to challenge him or be involved in some sort of plot related to Ash's championship. Another character could be Serena, especially if the fanfiction focuses on the romantic aspect of Ash's life along with his championship journey.
Often, Red or Ash are paired with Bill in fanfiction. Since they are well - known and experienced trainers, their interactions with Bill, who is more of a scientist - type character, can lead to really interesting storylines. For example, they could help Bill test out his new Pokemon - related inventions.