If Goku becomes more introverted, the story could change a great deal. His relationships with his friends and family might become more strained as he withdraws from them. For example, he might stop going to Bulma's parties or training with Vegeta as often.
Imagine Goku becoming more of a strategist. In the original story, he often relied on his raw power. But with a new personality that values planning, the battles would be very different. He might study his opponents more carefully before engaging, and this could lead to quicker victories or more complex and drawn - out battles. This would also change how the other characters view him, as they are used to his impulsive nature.
In fanfiction, a female Goku can also change the relationships. The male - dominated friendships and rivalries in Dragon Ball Z could be shaken up. Her presence could make the male characters act differently. For example, Krillin might be more protective of her, or Gohan could look up to her in a different way. This can create new and interesting sub - plots within the story.
Well, Goku's new - found intelligence can sometimes be a bit of a surprise to his friends. At first, they might be a bit skeptical or even a little intimidated. But as they see how he uses it to help them, it can bring them closer. For example, if he uses his smarts to figure out how to get to a new training ground that's really beneficial for everyone. His relationship with Vegeta could also change. Instead of just being rivals in strength, they could start to have more intellectual battles or discussions about strategy.
His relationship with Vegeta would also change. If Goku goes back to a time when they first met, he could try to befriend Vegeta right away instead of being enemies first. This would change the entire dynamic of their rivalry. They might become allies much sooner and train together, which would lead to both of them becoming even stronger at an earlier stage.
If there was a Goku and Caulifla love story, it would completely change the tone of the series. It would shift from being mainly about power - ups and battles to also including a romantic sub - plot. Goku's relationships with his existing friends and family would be affected too.
A very laid - back character could become more competitive. The Dragon Ball universe is full of strong - willed individuals competing to be the best. So, the reincarnated character might get caught up in the hype of power - leveling and tournaments, changing their easy - going nature to a more competitive one. They might start training obsessively to keep up with the likes of Goku and Vegeta.
The fanfiction might make their relationship more equal in a different sense. Before, there was always a bit of a power struggle between them. But as mates, they have to respect each other on a whole new level. They would have to consider each other's feelings and opinions more. For example, when making decisions about how to face a new enemy, they would have to consult each other rather than just going with their own instincts like they used to.
Goku's understanding of different universes and races could be deepened in fanfiction. Since Dragon Ball Super introduced the multiverse concept, fanfiction could explore how Goku interacts with and learns from beings from other universes, making him more worldly and less naive in some ways.
Their interaction can greatly change the storyline. If Black Goku and Bulma form an alliance, it could lead to a shift in power dynamics. Bulma's inventions could enhance Black Goku's abilities, making him an even more formidable foe or an unexpected hero. This could also cause other characters to react differently. For example, Vegeta might be more conflicted if Bulma is involved with Black Goku in some way.
Bardock is a tough and battle - hardened Saiyan. When he meets Goku, who has a more pure - hearted and friendly personality, there could be an interesting contrast. Bardock might be initially skeptical of Goku's 'soft' ways but then come to respect his strength which comes from his good heart. Goku, on the other hand, would be curious about his father and would try to show Bardock the value of protecting others, not just for the sake of battle like the Saiyans usually do.
In a fanfiction, Goku might be weakened due to a curse. He loses his Super Saiyan powers and has to start from scratch. This could lead to a great character - development arc. He might discover new ways to fight without relying on brute strength, like using his wits and strategic thinking more, and also learning new martial arts techniques from his human friends.