KillerDraco
Well-Known Member
I'd watch out for Infiltrator Chandelure.
Insane Special Attack + fire move + Infiltrator = bye bye Whimsicott.
It doesn't like being paralyzed though, so it does have to be wary in that respect. It's part of what makes Whimsicott so annoying to counter. A lot of things can dispatch it pretty easily, such as Noivern (outspeeds, Infiltrator, Flamethrower/Hurricane) or Chandelure (as already mentioned), but Whimsicott can easily screw them for the rest of the match by slapping Stun Spore on them, especially if lacking a cleric. Heck, it can even stop a sweep from certain Pokemon in that respect, given its priority Stun Spore can be your "panic button" on a setup sweeper.
Although it's somewhat moot point if you're playing in RU since both Noivern and Chandelure are UU.
Really, Whimsicott's worst enemies are the myriad of Grass/Poison Pokemon, such as Amoongus, Vileplume, Virteebel, and Roselia. Not only are they immune to Leech Seed and Stun Spore, but their Poison STAB obliterates Whimsicott if it chooses to stay in. The worst Whimsicott can really do is Taunt or Encore them, or U-Turn into a counter. Xatu is also an annoyance to Whimsicott as it can bounce back most of Whimsicott's arsenal, although fortunately it is immune to its own Leech Seed and Stun Spore. And above all else, Whimsicott hates Substitute, since it really lacks the ability to break through them, and much of its movepool is stifled by a Sub.