If Naruto fused with Bardock in fanfiction, the story would likely take a very different turn. At first, Naruto might be confused by his new abilities and instincts. He would need to train to master them. As he does, he would become a more prominent figure in the ninja world. He could potentially change the balance of power. Enemies would be more afraid of him, and allies would look to him for leadership. His journey would be about not only protecting the village but also about understanding his new Saiyan heritage.
In such a fanfiction fusion, Naruto might gain some of Bardock's battle instincts. Bardock was a fierce Saiyan warrior, so Naruto could potentially have an even greater edge in combat. He might also inherit some of Bardock's Saiyan traits, like enhanced strength and speed at a more fundamental level. This could make him even more formidable against powerful foes in the Naruto universe.
If Naruto fused with Majin Buu in fanfiction, the story might start with the fusion's initial confusion about its new powers and identity. As it tries to figure things out, it could attract the attention of various villains who see it as a threat or an opportunity. The story could then be about the fusion's journey to master its powers and find its place in the world while dealing with these antagonists.
The power balance would be greatly affected. If fanfiction gives Naruto some overpowered abilities like instant teleportation across any distance, it would make many of his battles much easier. Enemies that were once a threat would no longer be so.
The appearance of a Naruto - Ichigo fusion in fanfiction would likely be a blend of their features. Maybe he would have Naruto's spiky hair color but with Ichigo's hair style. His eyes could be a mix of Naruto's blue and Ichigo's brown. And he might wear a combination of their outfits, like Naruto's orange jumpsuit with some elements of Ichigo's Soul Reaper robes.
The story might progress in a way that Azula uses Naruto for her own purposes at first. Maybe she wants to use his unique abilities in the ninja world to gain an advantage in her own world. But as she spends more time with Naruto, she starts to develop real feelings for him as a surrogate son. This would lead to a change in her character as she becomes more protective and less self - centered.
If Naruto turned into a zombie in fanfiction, the story could progress in several ways. One way is that his zombification could be part of a larger, darker plot. Maybe Orochimaru or some other villain has a hand in it. His friends would then need to search for a cure while also protecting the village from his zombie attacks. Another aspect could be that Naruto's zombie form has some unique abilities that make him both a danger and a mystery. This could lead to different characters trying to understand and control his new powers for their own purposes.
The story could progress with Naruto having to deal with the challenges of his new form. Maybe he has to find a way to reverse the transformation, so he goes on a quest to find a cure. Along the way, he meets old friends and new characters who either help or hinder him.
The story could start with Naruto suddenly finding himself in a giant form. Then he has to quickly figure out how to move without causing too much destruction. As he gets used to his new body, he might start using it to protect the village from threats that normal - sized ninja couldn't handle.
The story might progress with Fuu adapting to the Leaf Village's lifestyle.
The story would likely start with chaos as Goku's sudden appearance would be a huge shock. His actions would drive the plot. For example, if he accidentally destroyed part of a village while testing his power, the ninja would either see him as a threat or try to get his help against other enemies.