Quagsire

With its decent physical bulk when invested, an amazing ability in Unaware, and access to reliable recovery, Quagsire can help stop some of the most dangerous setup sweepers in the tier that could otherwise threaten stall. Its physical bulk also allows it to naturally handle even more threats such as Tyranitar, Mega Charizard X, Landorus-T. Furthermore, it has a useful defensive typing that can help it take on threats, namely most Electric-types lacking Grass-type coverage such as Mega Manectric and non-Grass Knot Tapu Koko. However, Quagsire has very poor special bulk and is therefore left completely vulnerable to almost every somewhat threatening special attacker in the tier such as Tapu Lele, both Greninja formes, and Keldeo. Also, its general passivity and predictability force it to rely on equally passive teammates that can support and benefit from it. While it boasts good physical bulk, relatively powerful physical attackers can simply break through Quagsire. Mega Mawile, Mega Medicham, and Hoopa-U all possess the immediate power to 2HKO Quagsire though its defenses.