Board Thread:General Discussion/@comment-5047068-20141123201355/@comment-25555436-20141125180510

If I could have a guess, there's the chance Neo has more than 1 personality, and each personality has a different semblance.

Of course, with as much that we know about her, and the fact she has shown no real emotion other that being Princess Stabity, it's just a blatant guess.