Nidoqueen
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Typing: Poison / Ground
Base Stats: 90 HP / 82 Atk / 87 Def / 75 SpA / 85 SpD / 76 Spe
Abilities: Poison Point / Rivalry / Sheer Force
Whether you choose to face it or not, Nidoqueen is one of the most powerful forces in the RU metagame. Although her offensive stats don't look exactly stellar at first glance, thanks to her ability Sheer Force, she has the equivalent of essentially 112 Special Attack, which when combined with great coverage and the ability to run Life Orb without recoil, can deal massive damage to the majority of the tier. Nidoqueen also boasts a vast special movepool, and the sheer power behind her STAB's in Earth Power and Sludge Wave puts massive dents in anything that does not resist them. Finally, she has good coverage in Fire Blast and Thunderbolt, so even Escavalier and bulky Water-types cringe at the power. If coverage is not needed, Nidoqueen can go for Stealth Rock to effectively lay a hazard for the team. Just be wary that Nidoqueen has a middling Speed stat, but she makes up for that in bulk and power. Overall, Nidoqueen is a true powerhouse that should not be underestimated.