if all the true steven universe fans remember properly pearl explained to steven awhile back that when gems give up there forms that they can come back as monsters/beast what if when steven was born and she gave up the form that she had she came back as lion there is tons of evidence for this theory as well such as the video left for steven in lions maine and why would Rose's Scabbard be on the battle ground but the sword be in lions maine and the flag from the battle was also in lions maine but when lion made his very first appearance pearl was completely unfamiliar with him so how would he have gotten the flag from the battle grounds five thousand years ago a pink lion is'nt something people tend to just forget about
(feel free to post opinions theory or any flaws in my theory seen constructive criticism is welcomed but dont be negative)