Max Battle tier
5-star Dynamax
20,000 HP, 6:40 on the timer
20,000 HP, 6:40 on the timer
Swap these in for the Max Phase. Ranked by the damage of one Max Move against Regirock, at Max Move level 3; a Dynamax Pokémon's Max Move takes its Fast Attack's type, while Gigantamax Pokémon and a few others always use their own.
Keep these in between Max Phases. Ranked by how many Max Phases one trainer reaches with three of the Pokémon before they faint or time runs out, using Max Guard in each Max Phase and dodging targeted attacks.
Simulated at level 40 with no weather, friendship or Max Mushroom, over every pair of moves Regirock can use. Some of how Max Battles work hasn't been measured, so parts of the simulation are educated guesses.