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 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.
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.
We can draw the following conclusions: the picture of the inside of the normal nose is pink, the nasal membrane is smooth, there is no obvious swelling, and there is no abnormal secretion. When it came to nasal inflammation, the nasal membrane would have varying degrees of congestion, edema, redness, or paleness. There might also be telomegaly expansion, increased nasal secretions, and a large amount of pus and viscous secretions when it was combined with a bacteria infection. In addition, nasal obstruction, itchy nose, sneezing, runny nose, and other symptoms. However, the search results provided did not directly provide pictures of nasal sinusies and normal noses. Therefore, it was impossible to provide specific pictures of nasal inflammation and normal pictures.
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.