Board Thread:News and Announcements/@comment-26967247-20160209215523/@comment-1477984-20160415084643

A funny thing about Lapis is that she only ever came off aggressive once in the past — while fending off the Crystal Gems — but for the most part, she comes off as a total pacifist. As a water-based Gem, it would be her nature to find the path of least resistance. (I'll not be surprised if in her past life, she was a ambassador.) She said more than once to not fight the home world gems and appeal to their mercy (although not likely, given the fact that the home world is a cold, emotionless bureaucracy). Even going as far as to trap herself in the bottom of the ocean with Jasper so she'll not fight them nor return to the home world for reinforcements. Now they are fused and form into a Gem built from each others rage and madness. But as Pearl puts it: "Don't you know that a power that big... Comes with a bigger expense?"

From what I can gather form sneak peeks "leaks", that Lapis might be loosing her mind. That is, she is shown to be way more disheveled, taciturn and aggressive. I suspect that she might be slowly becoming a corrupt gem; to eventually become one of the many monsters the Crystal Gems spent millennia fighting.