Ferrothorn

Ferrothorn is an incredibly effective defensive presence in the tier, thanks to its robust dual typing, great bulk, and intensive arsenal of utility moves, including Stealth Rock, Leech Seed, and the rare Spikes. Finding easy setup opportunities against the many Pokemon it checks, such as Tapu Koko, Choice Specs Greninja, and Tapu Fini, Ferrothorn is perhaps the best entry hazard setter in the tier and is welcomed by any hazard-stacking balance team alongside other setters like Clefable and Toxapex. Though its bread and butter is on bulkier team styles, Ferrothorn is even a great fit on bulky offense teams, forming a support core with Tapu Fini and enabling big threats like Mega Diancie with its presence. Ferrothorn's moveslots can be mixed and matched to harass typical checks, with options like Leech Seed, Thunder Wave, and Knock Off weakening all sorts of switch-ins. As great as Ferrothorn is at doing what it does, there is very little it can do about its abysmal Speed, which, in conjunction with its weaknesses to relevant types to Fighting and especially Fire, can leave Ferrothorn a sitting duck against premier threats like Mega Medicham, Mega Charizard X, and Heatran. Additionally, its reliance on indirect damage forms can be cancelled out by Magic Guard users like Clefable, and its lack of reliable healing becomes incredibly apparent when it loses its Leftovers.