lol there is one problem... popitt is the puppet pokemon, not a pumpkin guy haha. but the shiny form DOES make it look that way.The Assassin said:google it possibly? who knows.
and yes I have. it's interesting, reminds me of a pumkin with car grills and for your next evo try something like a pumkin thats molding over and has feet made of straw yet no arms. and your last one, try something along the lines of a scarecrow, tied together by straw with arms made of straw, keep the head style though. makes sure to make it look evil, but don't overdo it. hope I helped some.
in fact, check out this pic, good inspiration but it is pretty dang scary for what it is, so be prepared.
i think for my final evo, it will be bigger and chubbier with 6 arms