Slowbro

Slowbro has a good defensive typing, reliable recovery, and fantastic physical bulk that let it check common Pokemon like Heatran, Garchomp, Terrakion, Dragonite, Keldeo, Mamoswine, and Alakazam lacking Grass Knot or Signal Beam. It also has Regenerator to reduce the long-term effects of entry hazards and make it less crippled by Pursuit when switching out on Tyranitar. It's also not overly passive, since Scald and Thunder Wave can burn and paralyze common checks like Ferrothorn and Rotom-W while it's also able to run coverage options like Ice Beam and Flamethrower to hit Dragon- and Grass-types. However, Slowbro's average special bulk and weaknesses leave it vulnerable to common special attackers like Volcarona, Reuniclus, Thundurus-T, and Latios. Its low Speed forces it to take a hit before attacking or recovering, making it possible to easily overwhelm, especially in tandem with entry hazards. While not passive, Slowbro can struggle to threaten and gets set up on by bulkier Pokemon that aren't crippled by status or hit super effectively, like Reuniclus and Latios. It's quite vulnerable to status, namely poison and burn, from Pokemon like Gastrodon, Tentacruel, Heatran, and Keldeo. It also faces strong competition from other bulky Water-types like Jellicent, Rotom-W, Gastrodon, and Seismitoad as a result of their better typings that let them check Pokemon Slowbro fails to, higher Speed and special bulk, and ability to spread status or set up entry hazards.