Kyogre

With an amazing base 150 Special Attack, a great ability in Drizzle, and good bulk, Kyogre remains one of the most dominant Pokemon of the metagame. Drizzle gives its STAB Water-type moves some extra firepower, turning it into an even scarier wallbreaker and providing support for its team by merely switching onto the battlefield. While base 90 Speed is not great, especially by Ubers's standards, Kyogre still outspeeds and breaks past common walls with its strong moves, and it outspeeds offensive threats once equipped with a Choice Scarf. Nevertheless, Kyogre often struggles to beat some of the extremely common Dragon-types that run rampant in Ubers such as Eternatus and Zekrom as well as the rarer Grass-types in Ferrothorn and Zarude, and it also finds Blissey problematic. Drizzle's rain setting also leaves it vulnerable to unavoidable Thunders that can hit it extremely hard.