Steven Universe - Why did Blue Diamond sound like a souls character by nobody

Oh man, I'm not the only one who thought this? Just the moment you hear her talking, Dark Souls clicked in my head.

I think it might be a combination of her soft voice and depressed tone that does it. Just the way it sounds compared to everyone else. Fits well with a lot of the voice work in the games. Plus her robe seems like a perfect fit for some characters as well when its covering her face.