There could be entirely new characters who are inspired by the legends of the old pirates. A young boy from a small island who has heard tales of Luffy and his crew might set out on his own adventure. He could gather a group of misfits around him, each with their own special abilities. This group could then cross paths with the descendants of the famous pirates and end up joining forces with them. In this case, this new boy and his friends could be the main characters, adding a fresh perspective to the One Piece Next Generation Fanfiction.
The children of the Straw Hat crew members could be the main characters. For instance, Usopp's son might inherit his sharpshooting skills and his love for tall tales. He could be a key figure in the new adventure, using his wits and marksmanship to get the group out of tight spots. Also, Nami's daughter could be a main character, having a natural affinity for navigation and also being a bit of a trickster when it comes to dealing with enemies, much like her mother.
The children of Rachel and Finn could be main characters. Maybe their son or daughter inherits Rachel's amazing singing talent and Finn's charm. They could struggle with living up to their parents' legacy in the glee club.
Definitely the children of Ladybug and Chat Noir. They would inherit the Miraculous and have big shoes to fill. Their personalities could be a mix of their parents' traits, like the daughter being as brave as Ladybug and having Chat Noir's sense of humor.
There could also be a character who is not directly related to the original ninja but has a special connection to the elemental powers. Maybe a young girl who discovers she has an ability to control an element that was previously thought to be lost. She would bring a fresh perspective to the group of the next generation and have to prove herself to the others.
One possible main character could be the son or daughter of Iron Man. They might inherit his genius and some of his tech - savvy ways. They could also have a bit of his cocky attitude at the start but grow into a true hero throughout the story.
The main character could be a person who was once a part of an evil organization but has had a change of heart. In the 'pokemon next generation fanfiction', they use their knowledge of the organization's ways to protect the new generation of Pokemon. They start with a single Pokemon that they rescued from the organization and build a team as they go, facing challenges from their former comrades and also making new friends among other trainers.
The proteges of the Avengers could be main characters too. Maybe Hawkeye has been training a young archer who has amazing accuracy but lacks confidence. This protege could be part of the next - generation Avengers and grow throughout the fanfiction, facing challenges that force them to become more self - assured.
New students from different kingdoms could also be main characters. For instance, a student from Vacuo who has a unique sand - based fighting style. Or a student from Atlas who is a tech genius and uses advanced weapons. They could team up with the descendants of Team RWBY to form a new, diverse team.
Well, it could include characters like Cassie Lang. Since she has shown an interest in following in her father's (Scott Lang) footsteps. She might be a key member of the next - generation Avengers in a time travel fanfiction. Another could be Kate Bishop. She has already proven herself as a skilled archer and fighter, and her abilities would be very useful in a time - travel adventure. And there's also Riri Williams, the young genius who could build amazing technology to help with the time travel and any problems they encounter in different time periods.
The children of Sansa Stark and Tyrion Lannister would be interesting main characters. They would have a unique heritage, being part Stark and part Lannister. Their story could be about bridging the gap between the North and the South, facing the challenges of being accepted in both regions. They might have to deal with the political unrest that still lingers after the events of the original series, while also trying to create a better future for themselves and Westeros.
The children of Blair and Chuck would be great main characters. They could inherit their parents' charm, ambition, and love for power plays. Maybe they would be rivals at first but then gradually realize they have more in common than they thought.