Some Pokémon have alternate forms that differ in appearance and may also differ in typing, stats, Ability, movepool, weight, or battle role. A form can be triggered by an item, location, weather, time, battle condition, regional variation, or a special game mechanic. Not every visual difference is a permanent form change; some are temporary battle transformations. When researching a form, check whether it is available in your game and whether its changes persist outside battle. Forms can dramatically change a Pokémon’s strategy, so do not assume information for one form applies to all forms of the species.