A common theme is power escalation. Writers often make them even more powerful than in the original series, creating epic battles. For instance, they might face off against multiple foes at once, showing off their enhanced abilities.
One popular Gogeta and Vegito fanfiction might be those that explore their power levels in new and creative ways. For example, a story could have them facing an extremely powerful new enemy that forces them to combine their powers in unexpected ways.
Some dedicated Dragon Ball fan communities on social media platforms might also be a good source. For example, certain groups on Facebook or Reddit where fans discuss and share their fanfiction works. However, the availability of exactly this pairing might vary. You may need to do some searching within those communities.
First, you need to have a good understanding of the characters. Know their personalities, their powers, and their relationships. For example, Gogeta is the result of Goku and Vegeta's fusion through the Fusion Dance, and Vegito is from the Potara earrings. This knowledge helps in creating believable scenarios for them.
They often interact as powerful allies. They respect each other's strength since they are both the result of fusing two extremely strong Saiyans. For example, they might exchange fighting techniques or strategies.
It gives a chance for creativity in exploring gender - swapped or alternate versions of the characters. Fanfiction writers can play with the personalities and backstories of these characters in ways that the original series might not have explored. For example, they can write about how the female Vegito might approach a relationship with Gogeta differently than a male Vegito would, adding new layers to the story.
In some fanfictions, Gogeta and Vegito might find themselves in a different dimension where the rules of power and combat are different. They would need to adapt quickly. For example, they may lose their ability to fuse at will and have to rely on their individual skills more. This would lead to a great character - development arc for both of them as they learn to fight in new ways.
If Vegito never unfused, it might mean that the enemies he faced were simply not strong enough to force the separation. This could imply that the story's difficulty level was lower than originally thought. Or, it could be that some external factor prevented the unfusing, creating a whole new set of plot twists and complications.
Well, a common theme is the exploration of different universes. In gogeta crossover fanfic, the idea of Gogeta traveling to different fictional universes and dealing with their unique challenges is quite popular. It's like he could end up in a universe full of magic and have to figure out how his power works there. Another theme is the combination of fighting styles. Since Gogeta is a powerful fighter, seeing how his fighting style combines with those from other characters in a crossover is exciting for fans. And of course, there's the theme of saving the multiverse. Many fanfics have Gogeta as the key to preventing some sort of cataclysm that affects multiple universes.