okay so when olimar throws pikmin at u, the best defense is ftilt and NA cuz it spins the pikmin to death and they cant latch on to you. When at a distance, try to throw waddles at him because pikmin can't go through the waddles when thrown (at least the first few pikmin). Next u should really try to grab him a lot, like a lot a lot. when in the middle of the stage dthrows to ftilt or just tech chase to either another dthrow or dash attack (****) when edgeguarding, bairs and fthrows r really the best thing. as long as you're edgehogging, olimar's pikmin can't grab the edge, thus leaving him falling to his doom. And if he gets back up, just throw him back off of the stage. and that is my in depth guide on how to defeat olimar lol XD