Steven is often paired with Black Diamond in fanfiction. Their interactions can be really interesting as Steven has his unique way of approaching Gems and his powers. He might try to understand Black Diamond or even persuade her to change her ways if she's portrayed as a more antagonistic figure.
Well, it's likely that Steven would still be one of the main characters. He often plays a central role in any Steven Universe - related story. Alongside him, there could be new characters created specifically for this fanfic that are somehow connected to the Black Diamond. And of course, any of the existing main Gems from the show like Garnet, Amethyst, and Pearl might also be important characters in this fanfic, especially if they interact with the Black Diamond in some way.
In fanfiction, Black Diamond's story can be used to explore themes like redemption and forgiveness. If she was once a tyrant, her journey towards becoming a better being can be a powerful narrative. It can also show how the other characters in the Steven Universe world react to her change, whether they are skeptical or accepting. This can create interesting character dynamics.
In Steven Universe fanfiction, Black Diamond is often depicted as a very powerful and mysterious character. Some fanfictions might explore her past, her relationship with the other Diamonds, and how she might interact with the main characters like Steven. For example, she could be portrayed as a reformed villain who is trying to make amends for her past actions.
Male characters in this type of fanfiction are significant as they can add diversity to the story. They can have different perspectives compared to female characters. For example, they might approach problems related to Black Diamond in a more straightforward or aggressive way, which contrasts with the more empathetic or intuitive approaches of some female characters.
Male characters in Steven Universe Black Diamond fanfiction can be really interesting. They might be new characters created by the fanfic writer. These new male characters could have special abilities or relationships with the existing characters. For instance, a male character could be a long - lost relative of one of the main characters. He might bring new knowledge about Black Diamond, which could change the course of the story in the fanfiction. Their interactions with Steven and other characters are what make these fanfictions engaging.
Peridot is a character that could be paired with Yellow Diamond in fanfiction. Since Peridot was once under Yellow Diamond's rule, there can be stories about her loyalty, her possible defection, or how Yellow Diamond views her. There could also be fanfictions that pair Yellow Diamond with other minor Gems from her colonies, exploring the power dynamics and relationships on a more micro level within the Gem society she oversees.
One interesting concept could be exploring the backstory of Black Diamond. Maybe in fanfiction, it reveals how she came to be so powerful and what her role was in the history of the Gem world.
Pearl, who was once Pink Diamond's servant, is another main character in many of these fanfics. Her loyalty to Pink Diamond, and how that loyalty has changed over time and affected her own character development, is a major aspect in these stories.
In some cases, Kakashi could be a main character. As Naruto's mentor, he might play a crucial role in guiding Naruto when it comes to dealing with the mystery of the black diamond. He could use his wisdom and experience to help Naruto understand the implications of this strange object.
I don't know as I haven't read it, but it could be a diamond miner as one of the main characters.