Regional form
Regional form is a variant of an existing species, native to one region, with a different appearance and often a different type and stats
Sun and Moon introduced 18 Alolan forms of Generation I species, such as Ice and Steel Alolan Sandshrew. Sword and Shield added Galarian forms, Legends: Arceus added Hisuian forms, and Scarlet and Violet added Paldean Wooper and three Paldean Tauros breeds. Some regional forms have their own evolutions, such as Galarian Meowth evolving into Perrserker.
Main-series games; introduced in Generation VII, Sun and Moon.
2 later changes
- Sword and Shield and Legends: Arceus added Galarian and Hisuian forms, including new evolutions.
- Scarlet and Violet added Paldean forms of Wooper and Tauros.