Azumarill

Water

Huge Power—indisputably one of the best abilities in the game—has blessed Azumarill with enhanced wallbreaking capabilities and fierce offensive pressure, making it one of Water's best physical wallbreakers. This is complemented by its access to hard-hitting STAB moves in Play Rough and Waterfall, as well as its access to priority in Aqua Jet, utility in Knock Off, and setup in Belly Drum, which turns Azumarill into an extremely threatening wincon and late-game cleaner. Its above average 100 / 80 / 80 bulk allows it to find multiple opportunities to set up Belly Drum, often making it the go-to choice for a cleaner. While it's not running a Belly Drum set, Azumarill can run a Choice Band set, which, when coupled with Huge Power, allows it to devastatingly wreck unprepared teams with its STAB moves. Furthermore, its typing is great defensively; Azumarill resists Dark, Fighting, and Ice and is immune to Dragon. These resistances really help Water teams, as they let Azumarill take on Choice Band Gyarados and Mega Gyarados. Azumarill also has access to Superpower, making it a fine Ferrothorn lure. Furthermore, Azumarill's flexibility doesn't end there—it is able to even run a defensive set using its other ability, Sap Sipper, to be a great Grass-type counter to Pokemon like Serperior and Breloom.

However, Azumarill is incredibly slow, unfortunately relying on a weak priority move in Aqua Jet to actually move before the foe in most cases, and this leaves it unable to do much to faster Pokemon like Magnezone and Serperior. Furthermore, if Azumarill runs a defensive set, it is incredibly weak, as it lacks the power granted from Huge Power, meaning it is unable to do much to Chansey and other walls.

Fairy

Azumarill is one of the few physically attacking Fairy-types, and it's a great one thanks to Huge Power. It can be a very threatening sweeper thanks to its access to Belly Drum and a priority move in Aqua Jet. Its typing gives it resistances to Fire, Water, and Ice and a neutrality to Steel, which is unusual for a Fairy. Its Water typing and access to Superpower allow it to check threats such as Heatran and Empoleon. Additionally, Azumarill's bulk is pretty good and allows it to take a hit before attacking or set up a Belly Drum more easily. However, Azumarill's Water typing brings a weakness to Electric, which Fairy-types don't appreciate as it is. Its Speed stat is also very low, which means it usually has to take a hit before being able to hit back or set up.