Well, Goku Black could be a powerful antagonist in the RWBY fanfic. His combat skills and powers from the Dragon Ball universe would make him a formidable foe. He could have his own motives, like seeking power in the RWBY world or trying to impose his own sense of order. For example, his ability to use ki blasts could be a new and terrifying threat to the Huntsmen and Huntresses in RWBY.
Goku Black could start as a power - hungry villain in an RWBY fanfic. But as the story unfolds, he might have a change of heart. Maybe he sees the value in the teamwork and friendship of the RWBY characters and decides to turn against his original evil intentions.
There are multiple factors. Firstly, the fanfiction allows for exploration of new storylines that the original shows might not cover. For instance, a fanfiction could explore what would happen if Goku Black was brought to the RWBY world and had to team up with the main characters to fight a common enemy. Secondly, the fanfiction can play with the different aesthetics of the two universes. The bright and colorful world of RWBY contrasted with the more intense and action - packed world of Goku Black can create a visually and thematically interesting blend. Moreover, the fanfiction gives fans the freedom to reshape and reimagine the characters in new and exciting ways.
Nora could also be a likely candidate. She's very energetic and not one to be intimidated easily. When she sees Goku's amazing power, she would probably be excited and want to team up with him right away. She would be constantly asking Goku about his world and his powers, and they would bond over their love for combat and having a good time.
The transformation aspect could also be explored. Goku Black has his different forms in the Dragon Ball series. In RWBY fanfiction, these forms could be affected by the Aura or magic in the RWBY world. Maybe his Super Saiyan forms could be enhanced or restricted by the unique rules of RWBY.
Goku Black could also be a part of some sort of experiment gone wrong in the RWBY world. Maybe some scientist was trying to combine different types of energy and accidentally brought Goku Black into their realm. This would lead to a lot of chaos as he starts causing trouble and the RWBY teams have to stop him.
You can start by looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. AO3 has a great tagging system, so you can search for 'Goku Black' and 'RWBY' tags to find relevant fanfictions. FanFiction.net also has a large collection, but the search might be a bit trickier. Another option is to check out Reddit. There are subreddits dedicated to both Goku Black and RWBY where fans might share or recommend fanfictions.
One possible storyline could be Goku Black's arrival in the RWBY universe causing chaos as his power level far exceeds that of most characters initially. He might target the powerful relics in the RWBY world, believing they could further his own dark ambitions.
Goku Black's super strength could be relative to the Grimm in RWBY. Since the Grimm are often very strong and durable, Goku Black's strength might need to be adjusted slightly so that he doesn't completely overpower them all at once. His strength could be on a level where he can take on multiple high - level Grimm at the same time, but still face challenges from the strongest ones.
Yes, there might be. The concept of crossovers in fanfiction is very common, and with the popularity of both Naruto and Dragon Ball series, it's not unlikely that someone has created a fanfic where Naruto shows admiration for Goku Black. However, it may be a rather niche concept within the vast world of fanfiction.