Ferrothorn

Ferrothorn is a prominent force within the 1v1 metagame due to its great mixed bulk in conjunction with its unique typing allowing it to defeat top-tier threats such as Magearna, Porygon-Z, and Tapu Lele. In addition to this, its wide range of setup moves such as Curse, Iron Defense, and Confide enables it to beat prominent physical and special threats like Porygon-Z, Zeraora, and Magearna. Its high-powered STAB moves such as Power Whip and Gyro Ball further help it have just a little bit of an offensive presence and beat Water-types such as Manaphy, Tapu Fini, and Primarina, in addition to Fairy-types such as Mega Diancie, Whimsicott, and Tapu Lele. However, Ferrothorn faces stiff competition with other Grass-type Pokemon such as Serperior, Tapu Bulu, and Mega Venusaur, which are all faster and have better recovery moves. Additionally, Ferrothorn has hardly any form of recovery outside of Leech Seed, which makes its job of stalling out Pokemon much harder to do, as it gets whittled down very easily. Lastly, Ferrothorn's 4x weakness to Fire means that top-tier threats such as Mega Charizard X and Y, Heatran, Dragonite, and Incineroar all have coverage moves to beat it no matter the situation.