The main characters could be Melmetal and an ancient Pokemon spirit that resides in the Hall of Origin. They could have a conversation that spans across time, sharing stories of the Pokemon world's past and future. And a young Pokemon ranger who accidentally gets involved in their encounter could also be a main character, trying to keep the balance between the two powerful entities.
Obviously, Melmetal could be one of the main characters. Another could be a trainer with a special connection to Melmetal.
It could be about Melmetal's origin story within the Hall of Origin. Maybe it discovers a hidden power there or meets other rare Pokemon.
It could be an experienced Pokemon trainer who has already conquered many gyms and is now seeking a greater challenge in the Hall of Origin.
A young and curious trainer who has always been interested in the legends of Pokemon could be the main character. They might have heard rumors about the Hall of Origin and set out to find it.
Well, it could be about a trainer who discovers a hidden entrance to the Hall of Origin. There, they meet legendary Pokemon and learn ancient secrets of Pokemon creation.
It could be a young and ambitious trainer. This trainer might have a special bond with a particular Pokemon that gives them an edge in their quest to reach the Hall of Origins.
It could be about a human who discovers a hidden entrance to the Pokemon Hall of Origin. This human might have a special bond with a particular Pokemon that leads them there. Maybe they are on a quest to learn the secrets of Pokemon creation or to find a way to stop an evil force that threatens the balance in the Pokemon world.
It might be that the fanfic focuses on a trainer who discovers Necrozma's link to the Hall of Origin. This trainer could be trying to stop Necrozma if it's causing chaos, or perhaps they're trying to help it. They would have to navigate the mysteries of the Hall of Origin, which could be filled with ancient Pokemon knowledge and power sources. There could be other Pokemon guardians in the Hall of Origin that the trainer has to face or befriend while dealing with Necrozma.
There might also be a legendary Pokémon itself as a main character. Perhaps a legendary that has been exiled from the hall for some reason. It's on a journey to redeem itself and regain its place in the hall. Along the way, it meets other Pokémon and trainers, and they form an unlikely alliance. The story could then be about how this outcast legendary changes the perspectives of those around it and how it overcomes the obstacles to return to the hall.
It could be the well - known trainers like Ash and Gary. They are often the center of attention in many Pokemon - related stories.
There might be some legendary Pokemon that are guardians of the Hall of Origin. For instance, Arceus could be a key character, as it has a strong connection to the Hall of Origin. And then there could be other trainers who are either rivals or allies of the main trainer in the story. They could all have different motives regarding Necrozma and the Hall of Origin. Some might want to capture Necrozma for its power, while others want to protect it or the Hall of Origin from harm.