Ash Ketchum is the central figure in 'The Secret Life of Ash Ketchum Fanfiction'. Since it's about his secret life, he is the main focus. Pikachu is bound to be there as his sidekick. In addition, antagonists from the Pokémon world could also be main characters in the sense that they create conflict in Ash's secret life. For example, Team Rocket might be more menacing or have different motives in the fanfiction.
The main character is Ash Ketchum, no doubt. Alongside him, Pikachu is an essential part of the story. However, depending on the plot of the fanfiction, there could be other main characters. For instance, if the fanfiction focuses on Ash's journey in a particular region, the Gym leaders of that region could become main characters, interacting with Ash in ways that are different from the original series and contributing to his secret life story.
Ash Ketchum is the central figure. His harem likely consists of various characters. For instance, Dawn, who is a skilled Pokémon coordinator. She might be part of the harem and brings her own unique personality and skills. May could also be one of the main characters in the harem, with her knowledge of Pokémon contests. And of course, there could be other new or less - known characters added to the harem in different fanfictions.
In this fanfiction, Gary could be an important character. Since he has always been in competition with Ash, he might have mixed feelings about Ash being the chosen one. Serena could also be a main character. She might be inspired by Ash's chosen - one journey and decide to follow him, offering her own skills and support. Professor Oak would likely be involved as well, guiding Ash with his vast knowledge of Pokémon.
One interesting aspect could be the exploration of Ash's relationships in a more in - depth way. Maybe his friendships with Pikachu and other Pokémon are shown from different perspectives. Another aspect could be the new adventures that are created for Ash, ones that might not be possible in the original series. Also, the fanfiction might delve into Ash's inner thoughts and feelings more deeply than the show ever did.
Obviously, Ash Ketchum is the main character. His Pokémon would also be very important characters. Pikachu, for instance, would likely play a crucial role in helping Ash get around and protecting him. His friends like Misty and Brock could also be main characters, as they would be there to support Ash in his new situation.
Misty and Brock could be important characters as well. They have been with Ash for a long time. They might be deeply affected by Ash's supposed death and be the ones leading the search to find out what really happened.
Obviously, Ash Ketchum and Misty are the main characters. Ash is the one who makes the ultimate sacrifice to save Misty. And Misty is the one who is saved, so she is also a central figure in this fanfiction as the one whose life is spared by Ash's selfless act.
The main characters are Ash Ketchum and Misty. Ash is the central figure, being a powerful Pokémon trainer in this fanfiction. Misty is his companion, adding her own charm and skills to the story. She is often there to support Ash, and their relationship forms an important part of the narrative.
In certain fanfictions, a Pokémon professor or an authority figure in the Pokémon world could betray Ash. They may have their own secret agendas. For example, a professor might use Ash's research data without his permission or manipulate him into dangerous situations for their own experiments. This would make Ash feel extremely betrayed as he looks up to these figures for guidance.
Team Rocket is a likely candidate. They're always up to no good and hypnotizing Ash would be just another devious plan for them. They could use it to finally capture Pikachu. Giovanni, as their leader, might also be involved in such a scheme. Another character could be a powerful and envious trainer who wants to eliminate Ash as competition by hypnotizing him and making him lose his skills.
Ash Ketchum himself is of course a central and great character. Pikachu is also really important as his constant companion. Then there could be some original characters created in the fanfiction that are really interesting, like a mysterious Pokémon trainer who has a unique way of battling.