If Goku was a Saiyan in a fanfic, it could explore different aspects of his heritage and potential. Maybe there would be hidden powers or ancestral ties that come into play.
If Goku married a Saiyan in a fanfiction, it might bring new challenges and adventures. Maybe there'd be family feuds or combined efforts to protect their kind. It really depends on how the author envisions their relationship and the subsequent story arcs.
Well, if they were brothers in a fanfic, it could change how they interact with the other characters. Maybe they'd have a deeper understanding and fewer power struggles between them. Also, their family background and upbringing could be explored in new and interesting ways.
It's a bit hard to say for sure. Both Vegeta and Goku have their moments of strength. Goku has some unique powers and techniques that give him an edge at times, but Vegeta is no slouch either and constantly works to catch up and surpass Goku.
Generally, Goku still holds the edge over Vegeta. Their power levels fluctuate, but Goku often achieves higher peaks of strength and unlocks more powerful forms first.
It often starts with a shock or surprise at the mpreg situation. Then, they gradually learn to rely on each other more. For example, Vegeta might start to show a more caring side that he usually hides, and Goku might become more responsible. They'll have to communicate more, sharing their fears and hopes about the future with the baby.
She could be an original character created by the fanfiction writer. Maybe she has some special abilities like being able to control a unique form of energy that Goku has never seen before.