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.
Well, apart from Naruto and Whitebeard, Ace could be a significant character. Given that he was also part of Whitebeard's crew, he might have an interesting relationship with Naruto. He could be like an older brother to her, teaching her about the ways of the pirates. And of course, characters from Naruto's original world like Kakashi or Sasuke might make cameo appearances in Naruto's memories or dreams, influencing her actions in the pirate world.
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.
Obviously, fem Luffy and Whitebeard are the main characters who will interact. Their personalities are so different yet so interesting. Luffy is full of energy and naivete in a good way, while Whitebeard is like a wise old sea dog.
Obviously, Sakura would be one of the main characters. And the members of the Akatsuki would also be important. For example, characters like Itachi or Pain might play significant roles as they are key figures in the Akatsuki. They could be mentors or antagonists to Sakura depending on how the story is written.
In this fanfiction, perhaps Naruto as Whitebeard's daughter is in a position to bring peace between the ninja world she came from and the pirate world of One Piece. She could use her knowledge of both worlds to broker deals and stop potential conflicts. Her unique abilities and the reputation of being Whitebeard's daughter would give her the influence to do so.
Obviously Naruto would be one of the main characters. He's the protagonist of the original series and his power and will would be crucial in a doomsday scenario. Sasuke would also be likely, as his strength and his connection to Naruto are important elements. Sakura, with her medical skills, would also be a key character as she could be responsible for healing the injured during the doomsday chaos.
Well, it's possible that some new or less - known characters from the Naruto universe could become main characters in 'chaos naruto fanfiction'. For example, Rock Lee could take on a more central role. He has always been a character full of determination and unique fighting style. In a chaotic setting, his strong will could be a key factor in dealing with the chaos. And then there are the jinchuriki of the other tailed beasts who might be more prominently featured as they are all related to the power dynamics in the Naruto world which could be thrown into chaos.
Obviously, Naruto would be one of the main characters. Since it's a Naruto - centered fanfiction with the beyonder element added. Sasuke could also be a main character as he is often Naruto's counterpart and rival. They might both be involved in exploring the beyonder powers. Additionally, characters like Kakashi could play important roles. He could be the one guiding Naruto and Sasuke in understanding these new and strange beyonder powers, given his experience and wisdom.
There may be new characters introduced as well. Maybe a mysterious figure who has a special ability to either enhance or dampen Naruto's will to live. This character could add an extra layer of mystery and conflict to the fanfiction.
Naruto would be the central figure. But in this British version, there could be new characters added, like a British wizard - type character who becomes Naruto's mentor in understanding the new 'British - ninja' aspects of his life. And of course, Sasuke and Sakura would be adapted to fit the British setting, perhaps with different family backgrounds that are more in line with British culture.
Definitely Naruto himself. He'd be a central character, causing chaos and bringing energy to the daycare. And Sasuke would also be there, probably being a bit of an aloof kid that Naruto is determined to get close to.