For Yamcha, you can focus on his growth from being a bit of a comical character to a more serious and respected fighter in the context of his relationship with Frieza. Maybe he learns from Frieza's cold and calculating nature how to better strategize in battles. For Frieza, his development could be about him learning to care for someone other than himself. He could start to see Yamcha as an equal, which is a huge shift from his usual superiority complex.
One possible plot could be that Yamcha, known for his tenacity, somehow ends up in a situation where he has to team up with Frieza. Maybe they are both forced to face a common enemy that is even more powerful than Frieza at his peak. This could lead to an interesting dynamic as Yamcha tries to get Frieza to work as a team, while Frieza is his usual self - conniving and power - hungry. Their interactions would be full of tension and mistrust at first, but over time, they might develop an odd sort of respect for each other.
One idea could be that Frieza, in a strange turn of events, spares Yamcha during a battle and then gradually becomes intrigued by his tenacity. This leads to them forming an unlikely alliance against a common enemy. As they spend more time together, they start to understand each other's motives and personalities, and a unique bond forms between them.
In a fanfiction, their relationship could start as adversarial. Yamcha, being a good - natured hero type, would see Frieza as an evil force. Frieza, on the other hand, would view Yamcha as a puny being not worthy of his attention at first. But as the story progresses, it could turn into a relationship of begrudging respect. Yamcha might admire Frieza's power despite his evil ways, and Frieza could respect Yamcha's courage in the face of such a powerful foe.
No. Abuse is never an appropriate topic, especially when it involves beloved characters from a popular series like Dragon Ball. It goes against the positive values that the series usually promotes.
Interesting strong Yamcha fanfics often give him new relationships or character dynamics. Like he could form an unexpected alliance with a former enemy, and through that, his character develops in new and exciting ways. Also, if the fanfic delves deeper into his backstory and uses that to fuel his new - found strength, it can be really engaging.
Some Yamcha fanfictions might center around his training. He could be training with different masters in these stories, or even discovering new techniques on his own to become stronger in the Dragon Ball universe.
Fanfictions can vary widely in their themes and content. In the case of 'yamcha abuses bulma fanfiction', it's a rather disturbing concept considering the characters. In the original Dragon Ball series, Yamcha and Bulma have a past relationship that was not like this at all. So this fanfiction might be an attempt by some writer to explore extreme and negative situations, but it's not something that would be considered positive or in - keeping with the general feel of the Dragon Ball franchise.