Definitely Naruto. Then, Deidara could be an interesting character in this. His explosive personality and unique art of combat could influence Naruto in some ways. He might teach Naruto some of his skills while also getting frustrated with Naruto's different approach to things. Sasori could also be a part of it. His puppet - making skills and his cold, calculated nature could add an element of mystery to how Naruto is raised within the Akatsuki.
Pain could also be a major character. His ideology and the Akatsuki's goals under his leadership might be affected by the presence of baby Naruto. He might see Naruto as a potential threat to his plans or as an opportunity to change the Akatsuki's path. Also, Konan might be involved as she often has a more empathetic side compared to some of the other Akatsuki members and could play a role in taking care of the baby.
Obviously, Nagato himself would be the main character interacting with Naruto. He would be like a mentor or a guardian figure in Naruto's life.
Obviously Naruto and Naruko will interact a lot. But also, characters like Iruka sensei might play a role. Iruka was important in Naruto's life, and he could also be a positive influence on Naruko. And Naruto's friends like Shikamaru, Choji, and Ino might interact with Naruko as well. They could be like her aunts and uncles, teaching her different things and having fun with her.
Obviously, Obito is one of the main characters. He has a complex backstory and his presence is bound to have a big impact on the Akatsuki.
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 the 'akatsuki watch battle of gods fanfiction', the Akatsuki members are bound to be the main focus. This includes Sasori, Deidara, and Hidan. However, when it comes to the 'Battle of Gods' part, characters like Whis, who is Beerus' attendant, could also play a significant role as the Akatsuki observe the interactions and battles among these Dragon Ball characters.
Sakura for sure. And then it might be Deidara. His love for art and his explosive personality would be really funny when paired with Sakura. Also, Sasori could be in it. His puppet - like self and Sakura's medical knowledge could lead to some really strange and humorous interactions. For example, Sakura might mistake Sasori's puppet parts for real injuries and try to 'heal' them.
Well, the sister herself is a main character, of course. She might be a new addition to the Akatsuki world with her own set of skills and a personality that stands out. Then there would be the well - known Akatsuki members like Itachi or Kisame. They could interact with the sister in different ways, for example, Itachi might be suspicious of her at first, while Kisame could be more laid - back in his approach to her.
Typically, the main characters would be the members of the Akatsuki like Itachi Uchiha. His character is often central in many fanfictions as he has a complex backstory and his actions are closely related to the Akatsuki's goals.
Obviously, Naruto is one of the main characters. He is the one being saved. And then, members of the Akatsuki like Itachi, Kisame, or Pain would likely be main characters as well. Itachi, for instance, has his own complex motives and backstory that could play into the story of saving Naruto. Kisame is a powerful and loyal member of the Akatsuki who could be involved in the rescue mission. Pain, as the leader in some cases, would also have a significant role in deciding whether or not to save Naruto and how to go about it.