Obviously, Naruto would be one of the main characters as the story is about him being the son of Whitebeard. Whitebeard himself would also be a major character, even if he might not be around for the whole story. And then there would be the other members of the Whitebeard pirates, like Marco. They would play important roles in Naruto's life in the pirate world, either as mentors or comrades.
Well, it could be about Naruto being raised in the world of One Piece under Whitebeard. Maybe he'd inherit Whitebeard's strong sense of family and use his Naruto - like skills in that universe. For example, his shadow clone jutsu could be a very unique and useful ability in the pirate world.
In pirate fantasy fiction, Whitebeard is a legendary figure. He is a symbol of power and a bygone era of piracy. He has a strong sense of honor among pirates, which is rare. His abilities include great physical strength and strategic thinking. His crew looks up to him as a father figure, and he protects them. He is often involved in epic battles and adventures on the sea, and his name strikes fear into the hearts of his enemies.
Whitebeard's speech is definitely fictionally significant. It can reveal his character, motivations, and influence the plot in meaningful ways. It might also stir emotions among the characters and the audience.
Ace is a great character to include. He was Whitebeard's adopted son, and their relationship was very deep. Stories about their interactions, whether it was Ace learning from Whitebeard or them having father - son moments, are always interesting. Marco is also a good choice. As Whitebeard's right - hand man, he could be in stories that show the inner workings of Whitebeard's crew and how they strategize and operate. Another one could be Luffy. Since Luffy had a connection with Ace and later respected Whitebeard, a fanfiction could explore their interactions.
Well, he might become more protective. Just like Whitebeard who was extremely protective of his crew, Naruto could start showing that same level of protectiveness towards his friends and the village. He might be more willing to use his power to shield them from any harm.
Whitebeard himself is often a very popular character in fanfiction. His powerful presence and fatherly role in the crew make him a central figure. Writers can explore his leadership, his past battles, and his relationships with the other crew members.
Obviously Naruto as Whitebeard's daughter would be the main character. Then, there would probably be Whitebeard himself, who would play the role of her father figure. The crew members of Whitebeard's ship like Marco would also be important characters as they interact with Naruto and help her adjust to the pirate life.