Whimsicott

Whimsicott makes for a good wallbreaker thanks to its defensive typing, usable Special Attack, and coverage options helping it switch into Pokemon such as Passimian, Vaporeon, and Scrafty and threaten potential switch-ins such as Incineroar, Garbodor, and Weezing with solid damage. These traits combined with U-turn and a great Speed tier also make Whimsicott a good pivot that can force out Pokemon such as Sneasel, Alolan Exeggutor, and Seismitoad and bring in the appropriate check. Unfortunately, Whimsicott's Special Attack stat leaves it unable to break through sturdier special walls such as Delphox, Mega Audino, and Ferroseed, while Assault Vest Slowking can also easily scout what Whimsicott locks itself into thanks to its titanic bulk and Regenerator. Additionally, because Whimsicott often uses its defensive typing to switch in and wallbreak, it struggles to stay out of range of priority moves such as Pangoro and Medicham's Bullet Punch and Sneasel's Ice Shard and is prone to being revenge killed by Choice Scarf users with super effective coverage moves such as Passimian and Togedemaru.