One idea could be exploring the backstories of Bojack's henchmen in more detail. Maybe they had different motives for following Bojack that could be delved into. Another idea is to create an alternate ending where Goku and the gang have a more difficult time defeating Bojack, perhaps with some unexpected power - ups for Bojack's side.
First, rewatch the Bojack Unbound movie to get a fresh feel for the story, characters, and their powers. Then, come up with a unique concept. It could be as simple as changing the location of the battle or as complex as introducing a new form of power. Next, create an outline of your story, including the beginning, middle, and end. For example, start with a normal day on Earth, then introduce the threat of Bojack in a new way, and end with a resolution that's different from the movie.
Well, it could be about the Z Fighters from Dragon Ball observing the fan - made scenarios in Death Battle fanfiction. Maybe they are reacting to the battles, power - level comparisons, and unique character match - ups that fans create in these fictional stories.
Obviously, the main characters would be the Z Fighters from Dragon Ball. This includes Goku, Vegeta, Piccolo, and others. Since they are the ones 'watching' the Death Battle fanfiction.
Some of the Z - Fighters like Goku might be a bit surprised at first, but he would probably be open - minded and give them his support as long as they are happy. Vegeta, on the other hand, might be more critical and think it's an odd pairing.
Krillin would probably be one of the first to be accepting. He's always been Goku's friend and would likely see Goku's inner strength regardless of the physical form. He might even joke about it a bit at first. Vegeta, on the other hand, would be initially shocked and perhaps a bit dismissive. But as he sees Goku's power in the new form, he would gradually come to respect it. Gohan would be very curious and would want to know how this transformation happened and what it means for their future battles.
One interesting aspect could be the unique match - ups that are presented in the 'death battle' part. Maybe in the fanfiction, Z Fighters are watching battles they've never seen before, like Goku watching a fight between characters from different universes.
'a vs.z comic porn' is an unwholesome and potentially illegal topic. We should focus on positive and meaningful content rather than such inappropriate subjects.