Hey, I'm lost hasn't even come into the forum
since the last time she posted that question.
Anyway, if you're still here,
for a catterpillar system it will be best to go to
gamingw.net and look at some tutorials (sometimes it's down,
and sometimes it isn't) and if you want to control both and make them kiss,
I suggest that you make a very thin sprite that looks like to people,
and for the kiss, use the player GFX change thingy.