Gigantamax moves are special attacks used by Pokémon that have undergone the Gigantamax transformation. This transformation allows certain Pokémon to grow in size and gain a unique appearance, along with access to powerful moves that are exclusive to their Gigantamax form. These moves often have enhanced effects compared to regular attacks, making them more strategic in battles. To use a Gigantamax move, a trainer must have a Pokémon that can Gigantamax and be in a battle setting where Gigantamaxing is allowed. Each Pokémon that can Gigantamax has its own specific move, adding variety and excitement to battles in the Pokémon series.