A Very Pikmi Halloween (Pikmi Pops)

Which Pikmi has the best haunted tree house ever?

Wubbs the Bat and Vampy the Bat are best friends.  Every Halloween, they host a friendly competition to see who can put on the best haunted tree house.  This year, Wubbs is determined to win.  But what tricks determined to win.  But what tricks (or treats) does Vampy have up its wing?