Wigglytuff

It may have a very large movepool that includes support options like Stealth Rock, a gigantic HP stat, and a unique typing in PU, but Wigglytuff constantly finds itself outclassed by other defensive Normal- and Fairy-types such as Audino, Clefairy, and Silvally-Fairy thanks to their better stats overall. This relegates it to being an offensive Stealth Rock user that can pressure Defog users with decent neutral coverage. However, Wigglytuff's middling defenses, mediocre firepower, and horrendous Speed make using it difficult. Wigglytuff also has to compete against other offensive Stealth Rock setters such as Aggron and Aurorus thanks to their better stats, typings, abilities, and ability to actually pressure Defoggers such as Skuntank.