Slowbro

With excellent defensive stats alongside a solid Water and Psychic typing, Slowbro is a great choice for taking on threats such as Mega Lopunny, Mega Metagross, and Mega Medicham. With recovery from Slack Off and Regenerator, Slowbro can absorb a lot of damage and still sustain itself for a long time, allowing it to function as an all-around defensive pivot. Its very wide supportive movepool lets it take on various foes comfortably. The defensive boost Slowbro gets after Mega Evolving, combined with the ability Shell Armor and its access to boosting moves like Calm Mind, makes it a very viable bulky sweeper. Despite all this, Slowbro's typing renders it weak to common Knock Off and Pursuit users like Weavile, Bisharp, and Tyranitar. Slowbro's typing also makes it vulnerable to both U-turn and Volt Switch, making it very easy to gain momentum on. Its mediocre Special Defense also makes it vulnerable to special attackers such as Mega Manectric, Serperior, and Thundurus. Lastly, Slowbro fears status such as poison and burn, moves that can put it on a timer, like Toxic, and moves like Taunt that can stop it from recovering health or inflicting its own status.