The central character is the Pokemon that starts its life anew as an egg. It might be a water - type Pokemon like Squirtle. Other important characters could include a Pidgey that acts as a messenger for the egg - Pokemon when it's in trouble. In terms of human characters, a female trainer who has a special connection with Pokemon might be one of the main characters. She might have a sixth sense about the egg - Pokemon's potential and tries her best to ensure its safety. And there could be a team of villains who are after the egg - Pokemon for their evil plans.
Well, the main character is likely the Pokemon that is reborn as an egg. It could be a popular Pokemon like Pikachu or Eevee. Then there might be other Pokemon characters that it befriends during its journey, like a friendly Charmander that helps protect the egg. And there could also be trainers that play important roles. Maybe a young and kind - hearted trainer who discovers the egg and decides to take care of it instead of capturing it right away.
The main character is surely the Pokemon which has been reborn as an egg. Depending on the fanfic, it could be a rarer Pokemon like a Larvitar. Alongside it, there could be a group of Pokemon friends. For example, a Bulbasaur that shares its food with the egg - Pokemon. As for human characters, there might be an experienced trainer who is intrigued by the egg - Pokemon's unique situation and tries to help it hatch in a proper environment. There could also be a rival trainer who wants to steal the egg for his own collection.
One interesting plotline could be the journey of self - discovery. As an egg - reborn Pokemon, the character might struggle to understand its new form and abilities. For example, it could initially be confused about how to hatch itself in a proper way. Another plotline might involve making new friends among other Pokemon. Since it starts as an egg, it has a unique perspective on forming relationships, like having to rely on the kindness of other Pokemon to protect it while it's vulnerable.
The main character is definitely the entity that is reborn as a dragon egg. This character experiences a complete transformation from its previous form (although we may not know what that was initially) into a dragon. Along the way, there could be other characters such as wise old dragons that act as mentors, or perhaps some humans or elves that cross paths with the newly hatched dragon. These secondary characters can either be friends who help the dragon understand the world better or enemies who see the dragon as a threat to their own existence or power.
Some Pokemon might be very secretive. For instance, the Absol. In fanfics, it could seek out a secluded cave far away from any human or other Pokemon activity to lay its eggs. It would be very protective and might even create some sort of natural barrier around the nesting area using its powers.
Obviously, Harry would be the main character as the title says he's the one who finds the Pokemon egg. His friends Hermione and Ron would probably be important characters too. They are always by Harry's side in most of his adventures in the wizarding world, so it's likely they'll be involved in this strange new discovery as well. And, of course, the Pokemon that hatches from the egg would also be a key character.
An organization of rogue scientists who want to experiment on Pokemon could be the main antagonist. They might be trying to create super - powerful mutant Pokemon or find a way to control all Pokemon. If you're reborn as a Pokemon, they might capture you for their experiments. This could lead to a story where you have to escape from their labs and expose their evil plans to the rest of the Pokemon world.
One interesting concept could be the unique environments where Pokemon eggs are laid. For example, in some fanfics, certain Pokemon might lay their eggs in hidden, magical groves that are full of rare plants and crystals. These special places could have an impact on the hatching process or the characteristics of the Pokemon that hatch from the eggs.
Perhaps an evil Pokémon organization. They could be conducting unethical experiments on Pokémon, and when they hear about the reborn Pokémon, they want to capture it for their research. They might believe that the reborn Pokémon holds the key to some sort of ultimate power or knowledge that they can use to take over the Pokémon world.
It could also be a new character created specifically for the fanfic. A young girl who has a natural gift for music and can communicate with Pokemon through melodies. She might use her talent to solve problems in the Pokemon world, like helping Pokemon that have lost their way or are in distress because of some dark force that is disrupting the natural harmony of the Pokemon world.
I'm not sure exactly as it depends on the specific 'the challenger pokemon fanfic'. But usually, there would be a young and ambitious Pokemon trainer as the main character. This trainer would be eager to prove themselves in the Pokemon world.
There might also be a villain who wants to use the power of fennel - influenced Pokemon for their own gain. This character would add conflict to the story and be a major antagonist for the other main characters to face.