Kyogre

Kyogre is one of the most threatening, if not the most threatening, Pokemon in Ubers. Between its great Special Attack, Drizzle, and good coverage in Ice Beam and Thunder, nothing is truly safe switching into it. Its pure Water typing, good natural bulk, and Drizzle also give it valuable defensive utility against premier physical attackers like Koraidon, Zacian-C, and Arceus-Ground, as well as special attackers like Lunala, Arceus-Fairy, and Arceus-Flying. This defensive utility allows Kyogre to consistently find opportunities to threaten bulky teams despite its below-average Speed. Kyogre is also one of the best Choice item users in the tier thanks to its Speed being good enough to threaten every defensive Pokemon in the tier, and its Water Spout is able to rip through even Water-resistant Pokemon like Eternatus and Giratina-O. However, many teams are able to stack Water-resistant Pokemon like Koraidon, Eternatus, Kyogre, and Kyurem-B, which can limit its effectiveness to a degree. Kyogre has below-average Speed and no recovery, so it is prone to being overwhelmed quickly. Kyogre's biggest drawback, though, is being constantly at odds with Koraidon, the best Pokemon in the tier. While Koraidon does not appreciate Kyogre switching into it, as the rain cuts Koraidon's power, Koraidon's Water resistance and ability to set up sun allows it to pivot into Kyogre's Water-type STAB moves, cutting its power and effectiveness greatly. Kyogre also cannot check Koraidon on its own without Terastallization, as it fears +2 Scale Shot or Wild Charge.