Another thing that could occur is that he might accidentally create new threats. By interfering with the past, he could disrupt the natural flow of events and cause new villains to emerge or existing ones to become more powerful in different ways. It's a risky move going back in time, even in fanfiction.
One possibility is that Gine could train Goku in some long - forgotten Saiyan techniques. Since she is his mother, she might know some unique skills that could make Goku even stronger.
In this kind of fanfiction, Goku might lose his family. For example, his friends and loved ones could be killed by a powerful new enemy. This would leave him in a state of deep despair and loneliness, and he would have to find a way to carry on without them.
Well, he might prevent some of the villains from ever becoming powerful. For example, he could stop Frieza from getting all those power - ups.
Perhaps he wants to save his friends. If he knew in the future that some of his friends died in certain battles, he might go back in time to change that. For instance, if Piccolo died in a fight with a powerful enemy, Goku could go back and help Piccolo, using his more advanced skills and power.
In this fanfiction, they might have an epic sparring session. Adult Goku could teach Kid Goku some new techniques, like the Instant Transmission. It would be amazing to see how Kid Goku reacts to Goku's Super Saiyan forms.
In this fanfiction, Gohan might face the challenge of hiding his Saiyan powers from his classmates. He could also make new friends who are interested in different things like academics or sports, and he has to balance his high school life with his training as a Saiyan warrior.
Well, he might use his powers secretly. Like, he could use his super speed to be on time for every class without even breaking a sweat. And when there's a bully in school, he could give them a little scare with his strength, but not too much to expose his true identity.
In fanfiction, when Goku meets his parents, it could be an extremely emotional moment. His father, Bardock, was a fierce Saiyan warrior. Goku might learn more about his Saiyan heritage directly from his father. Maybe Bardock would be proud to see how strong Goku has become, despite being sent to Earth as a baby. And his mother, whose identity is not as well - known in the original series, could perhaps share some tender memories of Goku's early days on Planet Vegeta. It could also lead to Goku getting new powers or training techniques passed down from his parents.
When Gohan's class meets Goku in fanfiction, there are numerous possibilities. Goku could be invited to talk about his adventures across different planets. His tales of fighting powerful foes like Frieza and Cell would be fascinating to the students. Maybe he'd even bring out some of the Dragon Balls as a show - and - tell item. This would not only shock Gohan's classmates but also make them realize the vastness of the Dragon Ball universe. Goku could also interact with Gohan in a different way in front of his class, showing a more father - son relationship than what they usually see in the normal series.
Well, he could change a lot of things. Maybe he'd prevent some of the big battles or save some characters who died. For example, he might stop Frieza from destroying Planet Vegeta earlier. It would be a whole new timeline with different outcomes.