its goku

Yes, there are such fanfictions. In some of them, the main idea might be to create a whole new universe where the powers and legacies of Naruto and Goku are intertwined. Maybe Naruto inherits Goku's Saiyan strength and fighting spirit, and combines it with his own ninja skills. This could lead to really epic battles and new storylines where he faces enemies that require both his ninja and Saiyan abilities to defeat.

Well, Vegeta would be a likely character. He might be initially suspicious of the female Goku. Maybe he thinks she's a threat or just can't believe there's another Goku - like being. He could be there to add some comical moments as he tries to understand the situation.

In most cases, they are depicted at similar levels of strength. But it can vary depending on specific story arcs and interpretations.

In general, it's a bit of a toss-up. The strength of Manga Goku and Anime Goku can vary depending on the specific arcs and battles. Sometimes, it might seem like one is stronger in a particular situation, but that could change in another.

In most cases, they are considered equally strong. The power levels in both the anime and manga are often presented in a similar manner.

Another possible main character could be the villain that forces the two Gokus to meet. This villain could be a new, super - powerful threat that the two Gokus need to deal with. Their meeting becomes a crucial part of the story to defeat this powerful foe.

One of the characters who could betray Goku is Piccolo. Although they've been allies for a long time, in fanfiction, things can change. Perhaps an ancient evil force takes control of Piccolo's mind and makes him turn on Goku. Or it could be Krillin. He might be influenced by an outside force that convinces him Goku is becoming too dangerous. Also, don't forget about the Kais. If there's some sort of power imbalance or a threat they perceive from Goku, they might betray him to maintain the order of the universe in the fanfiction.

Well, it could be about Goku Jr learning some of Goku's most powerful moves. Maybe Goku teaches him the Kamehameha. They might also go on an adventure together, like fighting a new and powerful enemy that neither could face alone.

Obviously, Goku and Goku Jr are the main characters.

In this fanfiction, they might have an epic sparring session. Goku could pass on some of his old fighting techniques to Goku Jr.