The meeting might also have an impact on the technology and knowledge in the Dragon Ball world. Maybe Gohan brings back some advanced techniques or knowledge from the future. And Goten, being young and curious, could spread this knowledge among the others. This could potentially change the way battles are fought and how they prepare for future challenges in the Dragon Ball universe.
Their meeting could lead to a change in Pan's perception of her Saiyan powers. Bardock was a strong Saiyan, and his advice or training could make Pan even more powerful. This might then influence how she deals with future threats in the Dragon Ball Universe.
The plot could also focus on their relationship. Since they are brothers but from different timelines in a way. They could bond over family stories that Goten has heard but Gohan can now give a different perspective on, like stories about their father. And they might train together to become even stronger for the future battles that Gohan foresees.
One great fanfiction could be 'Gohan and Goten's Training Adventure'. It shows them training together in a unique way, exploring new techniques and facing challenges that the original series didn't cover. It really captures the essence of their relationship as brothers and their growth as Saiyans.
Goku and Grandpa Gohan's interaction could be full of wisdom - sharing. Grandpa Gohan was a wise man, and he would pass on more of his knowledge to Goku. Goku, in turn, would tell Grandpa Gohan about all the new friends he has made and the different planets he has visited. They might also spar a bit, just like in the old days, with Grandpa Gohan giving Goku some pointers.
Gohan's super strength would make him a force to be reckoned with. He could easily overpower most of the regular characters in High School DxD. His ki blasts could also be a new form of attack that the others in the universe have never seen before.
His return could have a huge impact on the power balance. Since Future Gohan is a powerful fighter, his presence could tip the scales in battles against villains. For example, in fights against the Saiyans or the androids, his skills and experience could give the Z - fighters an edge.
It could have a huge impact. If Yoda imparts some deep Jedi knowledge, Grogu might become more confident in his Force abilities. He could be more decisive about his future as a Jedi or not. For example, if Yoda tells him about the importance of certain Jedi training, Grogu may strive to achieve those levels of training.
Future Gohan's character development would likely involve him becoming more resolute and determined. After all the hardships he's faced, he would grow stronger both physically and mentally. He might start as a somewhat broken hero, but as the story progresses, he'd regain his confidence and find new purpose in protecting what's left of his world.
The meeting could change things in several ways. For one, Gohan might inherit some of Bardock's more aggressive Saiyan traits, which could make him a more formidable fighter. This could potentially shift the power balance in the Z - Fighter group. On the other hand, Bardock could be influenced by Gohan's peaceful nature. If he were to somehow return to his own time, he might try to change the Saiyan culture towards a more peaceful one, which would be a huge shift in the Dragon Ball universe's history.
The interaction could completely change the course of the story. If future Percy tells the 12 - year - old about a big mistake he made in the past, the younger Percy could avoid it. This would then lead to a whole new set of events. For example, if that mistake was related to making an enemy, not making that mistake could mean that new alliances are formed instead.