Torterra

At first glance, one may perceive Torterra to be unsuited for OU play due to its exploitable weaknesses, such as those to common offensive types like Fire and Ice. In fact, one may question Torterra's merits over Metagross, who boasts much higher Attack and Speed stats, resists common priority attacks, and has a sizable movepool to work with, including a powerful Explosion as a last resort option. However, Torterra's Grass / Ground typing grants it a resistance to common moves such as Earthquake and Stone Edge, along with Stealth Rock, allowing it to switch in and out safely on most OU teams. Torterra's typing also grants it an immunity to Thunderbolt, and more importantly, Thunder Wave, something that many Pokemon would kill to have. Offensively, Grass and Ground complement each other very well. Torterra's STAB Earthquake can plow though some of the most common Pokemon in OU, such as Jirachi and Heatran, while its STAB Wood Hammer removes bulkier Pokemon from play, at the cost of some recoil.

Despite its perks, Torterra still has trouble muscling though Skarmory, Forretress, Celebi, and Breloom, all of which are common in the OU metagame. If one plans to use Torterra, be prepared to pack a method of weakening the aforementioned Pokemon, or removing them from play entirely.