Goku's daughter in fanfiction could be a key part of a new tournament in Dragon Ball Super. She has been training in secret with Whis and has developed a new form that no one has seen before. During the tournament, she surprises everyone by being able to hold her own against extremely powerful opponents. Her story could be about not only her power but also her journey to understand her place in the Dragon Ball universe as Goku's daughter.
One possible fanfiction idea could be that Goku's daughter has unique powers that are a combination of his Saiyan strength and something new, like the ability to control time on a small scale. She might struggle to fit in with the other Z - fighters at first because they see her as just Goku's daughter, but she proves herself by facing a new, powerful enemy that the others can't defeat easily.
In a fanfiction, Goku's daughter might inherit a special power from her mother (who could be an original character in the fanfiction). This power could be related to healing or some kind of spiritual energy. She uses this power to heal the injured during a big battle against a powerful villain. This makes her an important asset to the Z - fighters, not just because of her Saiyan heritage from Goku, but also because of her unique ability.
Caulifla and Goku's relationship in fanfiction could be really interesting. Maybe in this fanfiction, they start as rivals. Caulifla, with her Saiyan pride, wants to prove she's stronger than Goku. But as they fight more, they begin to understand each other's fighting styles and develop a mutual respect. This could lead to some really cool training sessions where they both learn new techniques from one another.
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.
She could have unique powers like Goku but with a different twist. Maybe she has a special ki ability that no one else in the Dragon Ball universe has. For example, she could control the elements using her ki.
In this fanfiction scenario, it could be an extremely emotional encounter. Goku, who has grown so much in Dragon Ball Super, finally meeting his father Bardock. Maybe Bardock gets to see how his son has not only become a powerful Saiyan but also a protector of Earth. It could lead to some interesting exchanges about Saiyan heritage and the future of the Saiyan race.
A powerful wizard or sorcerer who wants to use Goku's daughter's pure Saiyan energy for some dark magic. He could be creating chaos on Earth, and she has to stop him before he drains all her energy. This antagonist would be a departure from the typical physical - strength - based villains in Dragon Ball, adding a new dimension to the fanfiction.
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.
One of the interesting power - ups could be his Ultra Instinct form. In fanfiction, it might be further enhanced, like having different levels that are not shown in the original. For example, he could have an Ultra Instinct - Kaioken combination which would be extremely powerful.
Well, in fanfiction about Goku's changes in Dragon Ball Z, his physical changes can be really interesting. He might have some unique markings on his body as part of a new transformation. Some fanfictions also play around with his age - like making him age more slowly or even reverse - age in some cases. His fighting style could also change. Instead of relying solely on brute strength, he could start using more strategic moves, inspired by his opponents or his newfound understanding of the universe's power dynamics. And his relationship with the Dragon Balls themselves could change. He might discover new abilities related to them, like being able to communicate with the dragons on a deeper level.
In some fanfictions, Goku's death might be a sacrifice to save the universe. He could be facing an enemy so powerful that the only way to stop it is by giving up his own life. This would be a very emotional moment for his friends and family, like Chi - Chi and Gohan.