Board Thread:General Discussion/@comment-26408694-20141004142023/@comment-25306382-20141009020607

Even though I don't think Lapis was a member of the Crystal Gems, here's a good theory if she was. Lapis could've formerly been a member of the Crystal Gem and would've fought alongside Rose, Amethyst, Pearl, and Garnet. But one day she found out that they had betrayed their species (Gems) somehow. Possibly by staying on Earth while all the other Gems went back to their homeplanet, and thought that containing the corrupted Gems was the wrong thing to do. So she turned on the Crystal Gems and attempted to fight them, but lost. The Gems put her in a mirror so that she wouldn't be a threat to them, and Pearl lied to Steven about finding Lapis at the Galaxy Warp. So since Garnet was the leader, she kept the mirror so she could have access to her room (her and Lapis could've shared rooms, so both of them would have to activate their gems to open the door). During her confrontation with the Crystal Gems when Steven left her out, she said Did you even wonder who I used to be, indicating that the Gems may have ignored the fact that a live Gem was in the in the mirror and had just decided to treat Lapis like an object instead. Also, it could've been a looooong time that Lapis was in the mirror, so the Crystal Gems could have forgot about her formerly being Crystal Gem and who she was, but had still known a Gem was in the mirror.