Regional Variants

A regional form (Japanese: リージョンフォーム Region Form), previously referred to as a regional variant in Generation VII, is a species of Pokémon found in a specific region that takes on a different form than it does in most other regions. These Pokémon have uniquely adapted to habitats that are different than those where its species naturally live in other parts of the world. As such, many things may be different about them, from their appearance and way of living to even their type, moves, Abilities, base stats, height, and weight. This is analogous to peripatric speciation in regards to real-world phenomena, where a population that is isolated from the rest of the species develop unique traits and eventually evolve into a new species.

In the Alola and Galar regions, certain Pokémon species have regional forms known as an Alolan Form (Japanese: アローラのすがた Alola Form), previously Alola Form in Generation VII, or a Galarian Form (Japanese: ガラルのすがた Galar Form), respectively. A Pokémon in these forms are described as Alolan or Galarian—for example, Meowth in its Alolan Form is referred to as Alolan Meowth and Meowth in its Galarian Form is referred to as Galarian Meowth.

When breeding Pokémon whose offspring have a regional form, the offspring will normally take on the form corresponding to the region in which it was bred, regardless of its parents' forms. However, if one of the parents of the same evolutionary family held an Everstone when the Egg was produced, the offspring will be the same form as that parent.

List of Pokémon with Regional Variants
Unirstian Snom, Unirstian Frosmoth & Moltmoth