Azumarill

Azumarill is blessed with a strong STAB combination and Huge Power to boost its Attack to about as much as base 149, making it one of the best offensive Pokemon in Doubles OU. In addition, with its solid bulk, typing, and access to priority in Aqua Jet, Azumarill stands as the best and only viable Belly Drum sweeper in the metagame. It works well as a bulky Water-type for teams that also appreciate offensive presence, something that other bulky Water-types such as Suicune and Rotom-W lack. In spite of these good traits, Azumarill does possess low Speed, and it is threatened by common Grass- and Electric-types such as Rotom-W and Breloom. Also, as it is a physical attacker, it is susceptible to burns and Intimidate.