Swampert

For the past two generations, Swampert had been an OU staple. However, this generation, the power creep of OU was just too much for Swampert to handle and Swampert now finds itself in UU for the first time. The environment of last generation's OU is much like that of this generation's UU, meaning Swampert feels right at home in this tier. Swampert makes for a fantastic choice in UU because it combines great bulk, a wonderful defensive typing, a solid movepool, and an often overlooked base 110 Attack stat, serving as one of the best defensive pivots in the UU tier.

Even with that in mind, Swampert has its limitations. First of all, it lacks reliable recovery, which means it cannot stand up to many hits. It also has a terrible quadruple weakness to Grass, so Shaymin and Tangrowth can switch in with impunity. The real problem with using Swampert is knowing how to use him correctly. Swampert is not a wall, but rather a tank; if you try to sponge neutral attacks with the mud fish, then you'll find Swampert's HP dropping to zero far too quickly. However, if you're aware of its typing and take Swampert's limitations into account, then Swampert will be a great asset to your team.