Groudon

Although Groudon may seem out of place in a tier flooded by vicious special attackers, it has a very valuable and specific niche in Ubers. With a monstrous Attack stat and access to Rock Polish and Swords Dance, Groudon is one of the most prominent physical sweepers in the tier, capable of threatening both stall and offensive teams. Moreover, Groudon can play the role of a fantastic physical wall, and is one of the few Pokemon that can reliably counter Rayquaza, Garchomp, and Lucario thanks to its great Defense. Groudon also has access to Stealth Rock, a very valuable move that many Pokemon in the Uber metagame lack. Overall, Groudon is an extremely unpredictable Pokemon, and its ability to both sweep and support makes it a valuable asset to almost any team.