In addition to Minato and the 9 - tailed fox, there could be characters from Minato's family. For example, his wife or his future children. Their presence could add an emotional depth to the story. They might be in danger because of Minato's connection to the fox, and Minato has to protect them, making them important parts of the narrative.
The 9 - tailed fox itself can be considered a main character in a way. It has its own personality and motives within the fanfiction. It might not be a traditional character but it has a huge impact on the story. And then there could be an antagonist, perhaps someone who wants to steal the power of the 9 - tailed fox from Minato, which would make that person a key character as well.
Another plotline could be about Minato's relationship with the spirit of the 9 - tailed fox. Instead of just being a host, they develop a sort of friendship or understanding. The fox might teach Minato ancient secrets and wisdom that help him not only in battle but also in his role as a leader in the village.
Obviously Naruto himself, as he is the one turning into the Nine - Tailed Fox. Sasuke would also likely be involved. He might be the one to try and reach Naruto when he is in his fox - form, either to fight him or to bring him back. Sakura too, she could use her medical ninjutsu to try and help Naruto if he gets injured during the transformation.
When it comes to Sasuke, the Nine - Tailed Fox Faunus could be seen as a threat at first. But as the story progresses, they might find common ground in their pursuit of power and their desire to protect their own kind. The faunus could show Sasuke a different side of power, one that is more in tune with nature.
Perhaps a rogue werewolf pack. They see Stiles as a threat because of his nine - tailed fox powers. They believe that his existence could disrupt the balance of power in the supernatural world. So, they constantly try to hunt him down and drive him out of the town. They might also target his friends to get to him.
It could be Orochimaru. He is always interested in powerful forces and might see Naruto's release of the Nine - Tailed Fox as an opportunity to gain that power for himself.
Often, the main character would be the Sage of Tailed Beasts. They would be the central figure driving the story forward. There could also be other important characters such as the jinchuriki of the tailed beasts. For example, if the story is about protecting the tailed beasts, the jinchuriki would play a crucial role. And of course, there could be antagonists, perhaps villains who want to capture the tailed beasts for their own evil purposes.
Well, Naruto himself might still be a main character as he has a strong connection to the tailed beasts in the original series. He could be the one trying to understand and deal with the 10 - tailed beast in new ways.
For a 'Yobi the Five Tailed Fox' fanfiction, we could add a bear cub. The bear cub is lost and Yobi takes it under her wing. This creates a heart - warming sub - plot. A snake charmer from a nearby village who has some knowledge of magic could also be a character. He could either be an ally or an enemy depending on the story's direction. And then there's the idea of a fairy. The fairy is drawn to Yobi's unique five - tailed form and offers to help Yobi enhance her powers in exchange for a favor. But the fairy has a mischievous side that could lead to some unexpected twists in the story.
Well, for a 'naruto the nine tailed fox fanfiction', you should definitely consider including Itachi. His actions and his connection to Sasuke can be intertwined with Naruto's story involving the Nine - Tailed Fox. Tsunade is also a popular choice. As the Hokage, she has power and influence over Naruto and any situation regarding the Nine - Tailed Fox. Shikamaru is another character that can be interesting. His intelligence can be used to strategize around the power of the Nine - Tailed Fox. And of course, Gaara. He also has a tailed beast within him, so there could be some great interactions between him and Naruto regarding their shared experiences with tailed beasts.
The main characters are Minato and Musubi. Minato is often depicted as a strong - willed and kind - hearted character. He has his own set of skills and qualities that make him an interesting protagonist. Musubi, on the other hand, is usually portrayed as a unique and charming character. Her presence adds a certain charm to the story and her relationship with Minato is the central focus of the fanfiction.