Perhaps a scientist who has been studying Pokemon for years. When Pokemon start to rule the world, this scientist uses their knowledge to figure out how to live in this new situation. They might try to find a way to reverse the situation, or at least make sure that humans are treated fairly under Pokemon rule.
It could be a young and ambitious wizard. Wizards often have the power and knowledge to take over a world in fantasy stories.
The plot could involve Pokemon taking over all major industries. For example, they could run the power plants using their unique abilities like Electric - type Pokemon generating electricity. People would have to rely on Pokemon for transportation too, with Flying - type Pokemon as aerial taxis.
It could be an ordinary person from our world, like a high - school student. They would bring their own set of values and knowledge from the real world into the pokemon world. This contrast between the two worlds could create a lot of interesting storylines.
Maybe an ordinary person from the real world who discovers the portal and decides to explore the pokemon world. They would start from zero knowledge about pokemon and gradually become a great trainer. For example, they might first be terrified by a wild Pidgey but later learn how to catch and train it. Their journey of discovery could be really exciting to write about.
One main character could be a civilian engineer who devises new technologies that make the civilians less dependent on the ninja for protection. Naruto would be involved as he is always in the middle of any major change in the Naruto world. Additionally, a civilian diplomat who is able to negotiate with different ninja clans and villages on behalf of the civilians could be a main character. This diplomat would play a crucial role in getting the ninja to accept the idea of civilian rule.
Often, there will be a powerful and wise Pokemon like Mewtwo as a main character. Mewtwo has the intelligence and strength to lead and rule over humans. It can use its psychic abilities to communicate with humans and enforce its will.
It could be a new Uchiha character created specifically for the fanfic. This character could be an outcast Uchiha who has been living in hiding, observing the village's problems from afar. He decides to come back and use his unique Uchiha abilities, combined with a new perspective on life, to rule the village and bring about change. He would be an unknown force that disrupts the status quo.
It could be a professional Pokemon groomer. They are known all over the region for their amazing skills in giving Pokemon haircuts. They have a special bond with each Pokemon they groom, and they often get requests from famous trainers.
The main character could be a young and ambitious Pokemon scientist named Professor Willow. He has just graduated from the Pokemon Research Academy and is eager to make a name for himself in the scientific community. He specializes in studying the behavior of electric - type Pokemon.
A half - vampire, half - human character would be really interesting. They would have the strength and some of the powers of a vampire, but also the connection to the human world of Pokemon training. They could be on a quest to find their place in the world, whether it's among the humans, the vampires, or with the Pokemon themselves. They might face discrimination from all sides, but also find unique ways to use their abilities to their advantage in Pokemon battles.