There are quite a few out there. You can start by looking on popular fanfic platforms like Archive of Our Own. Some fanfics might focus on their unique relationship dynamics, exploring how Greg's down - to - earth nature could interact with Blue Diamond's complex character.
Tumblr also has a lot of fan - made content including fanfics about them. You can search relevant tags like #greg x blue diamond or #steven universe fanfic. There are often fanfic writers who post their works there and you might discover some hidden gems.
One common theme is family. Since they are father and son, a lot of fanfics explore their family bond, how they understand each other, and grow together. For example, stories might show Greg teaching Steven about his human heritage.
Another option is an ancient evil that was once sealed away by the Diamonds long ago. But due to some recent events in the Steven Universe universe, it is starting to break free. This evil force could target Blue Diamond because of her past actions and Steven because of his potential to stop it.
One great 'greg x blue diamond fanfic' might be one that explores their unique relationship in a world where different species interact. It could focus on how Greg's human nature contrasts with Blue Diamond's otherworldly essence. Maybe there's a story where they meet accidentally and form an unlikely bond through shared experiences like music, which Greg loves and Blue Diamond might find fascinating.
You can try looking on fanfic websites like Archive of Our Own (AO3). It has a large collection of fan - created works, and there's a good chance you'll find some 'greg x blue diamond fanfic' there.
One common theme is acceptance. Since Greg and Pearl are very different characters, a lot of fanfics focus on them accepting each other's differences. For example, Pearl's more formal and uptight nature compared to Greg's laid - back style.
There's also 'Musical Bond'. In this fanfic, Greg and Steven bond over music in a whole new way. Greg teaches Steven some old-school rock tunes and they end up writing a song together. It's a simple yet engaging story that showcases their unique father - son dynamic. It's filled with cute interactions and a lot of musical references that are really fun.
One idea could be that Steven tries to understand Blue Diamond's past traumas and helps her heal. Maybe he uses his unique powers of empathy to break through her cold exterior.
The main characters are obviously Greg and Blue Diamond. Greg is a human, a musician, and Steven's father. He has a laid - back and kind personality. Blue Diamond, on the other hand, is a powerful Gem with a complex personality. She is regal, often seen as cold, but has her own depths of emotion.