Board Thread:General Discussion/@comment-25788189-20150314214734/@comment-25464947-20150315180326

I dunno, that would require that Yellow Diamond has some way to teleport to earth without a warp pad, plus they would have to be able to juggle living in beach city and controlling a faction of gems on homeworld. Jasper implied that she and Peridot report to Yellow in person on a fairly regular basis, so travelling back and forth would be a huge hassle. Plus he has a dad.

However, I do think that Onion is inhuman. Perhaps he belongs to another race of aliens that were driven from their homeworld by the gems? Or maybe he's a gem "familiar" that got forgotten on earth (like Lion, Rose's plants, or Lapis' water constructs)?