Have a ridiculous headcanon theory you've been brewing for a week and now want to say it? Say it here? Do you think Onion is the demon-spawn lovechild of Blue Diamond and Yellow Diamond? Say it here! Or maybe get medical attention because that's weird!
I'll talk about my favorite theories here, when there's enough build-up to look at.
BTW, my theory is that secret gem-human hybrids control the government and dress up as world leaders.
This will be something.