Whimsicott's Weaknesses

Best Counters

Whimsicott is especially weak against Poison type Pokemon, they will deal 4x damage to it!

The types that are strong against Whimsicott are Poison, Fire, Flying, Ice, Steel type Pokemon.

For the best defense, Poison, Steel, Fire types have very effective defense against Whimsicott, and will be resistant to damage from Whimsicott's STAB attacks:

Weaknesses

Whimsicott's type is Grass and Fairy.

Whimsicott is especially vulnerable to Poison attacks, it will receive a super effective four times (4x) the amount of damage! Since Poison type Pokemon are especially strong against Whimsicott, you should attack with this type of Pokemon.

Whimsicott has a weakness to Poison, Fire, Flying, Ice, Steel types. These Pokemon types will be strong against Whimsicott, causing Whimsicott to take a super effective quadruple (4x) damage from Poison type attacks, and causing Whimsicott to take a super effective double (2x) damage from Fire, Flying, Ice, Steel type attacks.

Dragon type attacks will have no effect on Whimsicott, as Whimsicott is immune to this type of damage! Please avoid these types of attacks.

Please keep in mind that Whimsicott is resistant to attacks from Dark, Electric, Fighting, Grass, Ground, Water types, and these attacks are not very effective and cause reduced damage, so they should be avoided.