Omygod I love Thomas Sanders so much. He’s just so accepting of everyone and so kind and genuinely cares about everyone and he’s just a smiley little ray of sunshine. Wow. Not to mention he’s super adorable and makes fantastic vines/youtube videos. Thomas Sanders is a precious gift to mankind. Keep him safe.
It's just speculation out there in the water waves, but when Pearl makes small sand projections in Giant Woman to introduce Steven to the concept of fusions, the sand Opal only has 2 arms. It might just be to make the 4 arms thing a surprise, though it could be that the last time they formed Opal, Opal just had 2 arms because they had a close bond, as opposed to their strained bond currently within the show.