"what do you mean, that's not up to date at all"
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One of my favorite things about Steven Universe (besides its positive male role models and jokes like "buy t-shirt cannons") is how many people are so happy to find a character that represents who they are and makes them feel included.
But I guess I don't feel like any of the characters in the show really connect to me on a personal level. It's not a big deal - you can only have so many characters if you want to keep the story clear and compelling. (I do love Amethyst though.)
So I put together this fan character. I like her enough that I'll probably use her on my Star Trek crew too - I don't even have to change her backstory (you could call the gems "non-computer-based photonic lifeforms".)
Pyrite left Homeworld because she was uncomfortable with the way its society operated and she didn't want to be part of it. However, she had been comfortable working within the regimented society of Homeworld, doing a job that she really liked - being the electrician on a starship - and on Earth she doesn't have anything to do.
She also has a very hard time making friends, even though she gets along well with people, because it's hard for her to connect emotionally with other people. If she met the Crystal Gems she would notice their loving & dynamic relationships (especially Garnet) and worry that there was something wrong with her because she didn't have anyone she was close with.
I think she would get along well with Ronaldo even though they're very different.
Pyrite can shapeshift to create hands when she needs them. She doesn't need feet because she just glides along whatever surface she's on.