Skarmory

Skarmory's impressive physical bulk and great defensive typing allow it to blanket check most physical attackers in the tier, including Landorus-T, Garchomp, Rillaboom, Kartana, and Weavile. Skarmory differentiates itself from other physical walls by being one of the only viable Spikes setters in the tier, easily setting it because of the many switches it forces against the Pokemon it walls. This prevents it from being completely passive despite its poor offensive stats. Iron Defense in conjunction with Body Press can also turn it into a late-game wincon. However, Skarmory's terrible special bulk leaves it vulnerable to almost every special attack, including even resisted attacks from strong wallbreakers like Tapu Lele and Dragapult. Skarmory faces competition from Ferrothorn and Mew as a Spikes setter, which have access to Knock Off and better special bulk to check Pokemon like Tapu Koko and Kyurem, as well as Corviknight and Buzzwole as a physically defensive wall, which have U-turn and actual offensive presence, respectively. Skarmory does, however, have access to reliable recovery and can consistently check Ground-types unlike Ferrothorn, as well as access to Spikes unlike Corviknight and Buzzwole.