New trailer showing a few Gigantamax forms:
A Gigantamax-capable Pikachu is obtained when you have save data for Pokémon Let's Go, Pikachu.
Electric-type attacks used by Gigantamax Pikachu will change to G-Max Volt Crash, which not only deals damage but also paralyses all opponents, including Ground-types. This Pikachu cannot evolve.
A Gigantamax-capable Eevee is obtained when you have save data for Pokémon Let's Go, Eevee.
Its G-Max Move is G-Max Cuddle which turns all Normal-type moves into the move and infatuates any Pokémon of the opposite gender. This Eevee cannot evolve.
Fire-type attacks used by Gigantamax Charizard will change to G-Max Wildfire, which will also continue to deal damage for four turns to any Pokémon that isn’t Fire type.
Bug-type attacks used by Gigantamax Butterfree will change to G-Max Befuddle, which can also inflict poison, paralysis, or sleep.
A Meowth capable of Gigantamaxing is available from launch until January 15th 2020 as a special early bonus gift.
Normal-type attacks used by Gigantamax Meowth will change to G-Max Gold Rush, which inflicts confusion and scatters coins all over the field to give you extra money after battle.