If you have a hard time killing the mushroom monster(aka puffstool) in pikmin heres a glitch thats fun: first get your pikmin to trip it and then when it flips it will be getting ready to spray it's spores, get all your pikmin to fight it then just as it flips its mushroom cap wistle them back. if you do it right your pikmin will turn into mushroom pikmin and be under your cammand you can only move them with the C stick and will do tasks for you but will turn back to normal after they are done with the task.

on another note to stop the "mushroomification" wistle when the pikmin's stalk is floped down they'll come to you normal