Honestly, no idea, I love everybody there.
Would say Lynn, Zack or Cedric but all of them are so adorable, complex and just nice that I can't decide at all.
And agreed on the part about the kinds, but adding my opinion that every character shines there. =) Just wish we had more of the show itself.
Butterflies are almost 0 there, a special would change a lot, which is what I'd love to have, honestly.