Wooper

Wooper's incredible defensive typing in combination with Water Absorb as well as its access to reliable recovery makes it one of the most consistent counters to some of the common Water- and Electric-types in the tier, such as Staryu, Chinchou, and Magnemite, and allows Wooper to consistently wall these threats throughout the game. It also has access to interesting support options such as Yawn, Encore, and Haze. However, Wooper's low offensive stats mean that it can often be setup bait. Its bulk is also low for a defensive Pokemon, especially on the special side, meaning that powerful wallbreakers such as Life Orb Doduo and Abra will easily be able to break it. In addition, both of Wooper's STAB moves are resisted by Grass-types, which also threaten it with a 4x super effective STAB move, meaning that it is easily countered by common Pokemon such as Pumpkaboo-XL and Foongus. Its weakness to Grass also means it has to be very careful of Grass-type coverage on certain Pokemon such as Ponyta and Clamperl that it would otherwise be able to check.