Show his adaptability. If he is placed in a lemon - themed situation that is far from his normal combat - focused world, like a romantic or sensual encounter, how does he react? Does he try to dominate the situation or is he more submissive? This can show different facets of his character.
Explore his backstory in relation to the new elements in the fanfiction. Maybe there was an event in his past that makes him react a certain way to the more adult - themed situations in lemon fanfiction. This could be a traumatic event that he has to overcome or a hidden desire that is finally being explored.
Goku and Launch could start with a simple encounter involving lemons, like Goku accidentally bumping into Launch while she is carrying a basket of lemons. This could lead to an apology and then an invitation to share some lemonade. From there, their relationship could grow as they find more common interests related to lemons, such as making lemon pies together.
For Goku, his character can be developed by showing his adaptability to Ultear's world. He could learn about different types of magic and use his Saiyan ability to incorporate some aspects of it into his fighting style. For Ultear, she could grow in terms of her understanding of different power sources. Goku's simple yet strong sense of justice could inspire her to be more straightforward in her actions and less manipulative if she has such tendencies in her original character.
Goku's character can be developed in this genre by having him teach Female Beerus about the joys of training and self - improvement from a Saiyan perspective. This could lead to her becoming more enthusiastic about training and less reliant on her natural divinity. Female Beerus could develop Goku by introducing him to the more complex politics and hierarchies of the divine realm. This would make Goku more aware of the bigger picture and force him to think more strategically, not just in terms of physical battles.
To develop Goku Jr's character further, he could be given more complex emotions. For example, showing his fear in the face of truly overwhelming enemies, rather than always being fearless like Goku. This would make him more relatable. Also, exploring his relationships in more depth, like his friendship with Pan. Maybe they have a falling out over different views on how to protect their world, which forces Goku Jr. to grow and understand different perspectives.
To develop Halstead in black girl fanfiction, his relationships with other characters around the black girl can be explored. For instance, how he interacts with her family or friends. This can show his adaptability and social skills. Maybe he has to win over her skeptical father or bond with her sassy best friend, which in turn shapes his character in new and interesting ways. The fanfiction could also delve into his internal thoughts and feelings as he navigates these relationships, which would add depth to his character.
In fanfiction, Goku's character can be developed by exploring his family side more in relation to Sakura. Maybe he sees her as a sister - like figure and tries to protect her. This would show a different side of his protective nature. Sakura, on the other hand, could be developed by her learning about Goku's simple yet determined mindset. She could then apply some of that to her own life, like being more straightforward in her goals. This would change her character in a way that makes her more confident and less self - doubting.
With Gine, her character can be developed by exploring her feelings towards Goku. She could be shown as a loving and proud mother, but also with a sense of sadness for all the years she missed with him. Her interactions with Goku could bring out her more maternal instincts, and she might start to see Goku as a symbol of hope for the Saiyan race.
Lillie could start off as being shy around lemons (maybe she had a bad experience with a sour lemon as a child) but then learn to appreciate them as she discovers their importance in the Pokemon world. For example, she could learn that a certain lemon - related item can boost her Pokemon's speed. This would show her growth in being open - minded and resourceful.
In fanfiction, Goku Black's interaction with Bulma can be very different from the original series. Sometimes, he may start off as hostile towards her, given his nature as an antagonist. But as the story progresses, he could develop a grudging respect for her intelligence. For example, if Bulma is trying to create a device to stop him, he might admire her tenacity in the process.
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.