Azumarill

Azumarill is a niche option on hyper offense and rain teams due to the combined potency of Belly Drum and Huge Power, granting it a monstrous Attack stat after it boosts up. At +6, Azumarill obliterates Ferrothorn, Tangrowth, and Toxapex with its coverage moves, which can be essential on rain teams due to these three walls specifically being annoying to break. Azumarill's typing also makes it a usable offensive check against Ash-Greninja, which is also appreciated by offensive teams that often contain a lack of reliable defensive answers to top wallbreakers. However, Azumarill's major lack of Speed forces it to rely on priority Aqua Jet. This leaves it shut down by Tapu Lele's Psychic Terrain and by various faster Pokemon such as Kartana and Rotom-W that can take a hit and retaliate. Additionally, Azumarill usually only gets one opportunity to set up Belly Drum, which forces it to be preserved for late-game to sweep once its checks have been chipped down enough or removed. However, Z-Belly Drum can offer Azumarill a second opportunity of setting up in some rare instances.