Goku may also grow in terms of his wisdom. Through experiencing such great loss, he would gain a deeper understanding of life and the value of things. He could then use this new - found wisdom to try and rebuild his life, even if it's not the same as it was before. He might start to mentor others in a more profound way, sharing his experiences and the lessons he learned from losing everything.
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, in Dragon Ball Super SSJ 4 Goku fanfics, his character development is often quite interesting. His SSJ 4 form is not just about physical power. He could start to understand the spiritual side of his power more deeply. He might go on a journey to find out the true origin of the SSJ 4 form, which leads him to ancient Saiyan or Namekian knowledge. This new knowledge could change his perspective on his role in the universe. He could also develop better leadership skills. Since he's so powerful in SSJ 4, others might look up to him more, and he has to learn to lead in battles and in making decisions that affect the whole group, not just himself.
Goku grows incredibly in the manga. He starts as a naive kid and becomes a powerful warrior through countless battles and training.
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.
At first, they were just partners in the search for Dragon Balls. Bulma was attracted to Goku's unique naivete and strength in a way.
In the fanfiction, their relationship might start off as a bit of a shock to both of them. But gradually, they begin to respect each other more. Goku starts to see Bulma's intelligence and how it can benefit their family and the world. Bulma, on the other hand, comes to admire Goku's unwavering sense of justice and his strength. They communicate more often, sharing their thoughts and dreams. For example, Goku might tell Bulma about his Saiyan heritage in more detail, and Bulma might share her latest scientific ideas with Goku. This sharing helps them grow closer together.
Trunks could become Goku's mentor in some aspects. Since Trunks comes from a more technologically advanced future, he could teach Goku about advanced energy - manipulation techniques that are not yet known in Goku's time. This would create a new dynamic in their relationship as Goku looks up to Trunks in this particular area while still being the overall more experienced fighter in terms of raw combat.
His character would develop a more strategic side. Beerus is a very strategic fighter, and Goku, being raised by him, would learn to think more before acting in battles. He would also become more aware of the power hierarchy in the universe at a younger age, which could make him more cautious or more ambitious, depending on how you look at it. Additionally, his Saiyan pride might be tempered by Beerus' teachings, making him more of a team player in some ways.
His social skills might be different. Instead of the somewhat naive Goku we know, he could be more aware of social norms. Bulma could teach him about proper behavior, but at the same time, his Saiyan impulsiveness would still shine through at times. So he might be a strange mix of a well - mannered person in some situations and a wild fighter when provoked.
At first, Caulifla might be a bit intimidated by Goku's power. But as they train together, she would start to understand his techniques and philosophy of fighting. Goku would also learn from Caulifla's unique approach to battles. Their relationship could evolve into a deep bond where they rely on each other in tough battles. For example, Goku could save Caulifla from a near - death situation, and in return, Caulifla could come up with a creative battle strategy that helps Goku against a difficult opponent.