Honestly, comparing the strength of anime Goku and manga Goku is tricky. Both versions have their unique strengths and challenges depicted differently, making it hard to make a clear-cut comparison.
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 find a picture of the red anthuriums. The flowers of the red palm were very unique. They were like bright red palms with yellow stamens in the middle. There was a long stamen standing on the petals of the red anthuriums. From afar, it looked like a spiked club, but from a close distance, it looked like a cactus. The overall shape of the red anthuriums was very strange. The green heart-shaped leaves were fresh and cute, and the bright red flowers were dazzling. The floral language of the red anthomelia was still very positive, representing the grand blueprint of exhibition, passion, and blood. The red palm belonged to the Anthidium of the Aracea family, and was an evergreen herb. Red palm likes warm, afraid of cold, like wet, afraid of drought, like shade, afraid of sunshine. Its flowers had a Buddha flame inflorescence, which was bright and gorgeous. The common colors of the leaf-shaped bracts were red, pink, white, etc., which had great ornamental value. The red anthuriums could reproduce by dividing the plants. In short, the anthomelia was a very unique and beautiful flower.
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.