The latest DLC for Pokémon Scarlet and Violet, titled The Teal Mask, brings a new area called Kitakami along with it. The Kitakami Pokédex contains 200 Pokémon, with approximately 100 of them being previously unavailable in the base games. This offers players the opportunity to catch Pokémon they may not have encountered before.
If you’re curious to see if your favorite Pokémon made it into the Kitakami Pokédex, you can easily search for their name on the page. However, be aware that only a limited number of Pokémon were added in this DLC, and more will be introduced in the second half of the DLC, The Indigo Disk.
Aside from returning Pokémon, The Teal Mask also introduces seven new Pokémon: Dipplin, Poltchageist, Sinistcha, Okidogi, Monkidori, Fezandipiti, and Ogerpon. Players can look forward to discovering and capturing these new additions to their teams.
It’s important to note that the Kitakami Pokédex does not include specific Pokémon such as Walking Wake and Iron Leaves. These Pokémon, along with any that can be transferred from Pokémon Home, can still be used in the game via transfers or raids. However, they cannot be found in the wild unless there are specific events in the future that allow for their encounter.
Source: Pokémon Scarlet and Violet Kitakami Pokédex (source URL)