Groudon

Groudon's titanic physical bulk, strong support movepool that includes Will-O-Wisp, Stealth Rock, and Spikes, and good defensive typing make it a solid physically defensive option against common threats like Zacian-C and Koraidon; it is also able to run Stealth Rock and Spikes on the same set, offering good role compression. It is no slouch offensively either, as even defensive sets can put out solid damage with its great base Attack and Precipice Blades, which wallbreaking sets take even further with Swords Dance. However, Groudon often struggles to find a niche on teams, as it is often left on the sidelines in favor of Arceus-Ground, which has recovery and better special bulk, Landorus-T and Gliscor, which have better abilities and typing and U-turn, and Ting-Lu, which can better check Miraidon. Offensive sets, while still immensely powerful, compete heavily with Koraidon and Arceus-Ground, which boast better Speed, Taunt, in Arceus-Ground's case, Recover, and in Koraidon's case, better power. Groudon can still find a niche with its excellent bulk, ability to run both Stealth Rock and Spikes on the same set, and damage output, but that niche is often dependent on the team already using a different Arceus forme and Koraidon being too busy to run Swords Dance.