Pokémon Sword and Shield' Crown Tundra DLC: List of Returning Pokémon

Every Legendary Pokémon from past games have returned.

Pokémon Sword Expansion Pass for Nintendo Switch - Nintendo Official Site

Pokémon: Crown Tundra' release date, trailer, and Pokédex leaks detailed

Pokémon Sword' And 'Shield' DLC Release Confirmed, Old Favourites Return - GAMINGbible

Updated Pokemon Returning List (With Disclaimers) : r/PokeLeaks

Pokémon Sword and Shield: The Crown Tundra - Wikipedia

Pokémon Sword and Shield Crown Tundra DLC release date announced - Polygon

Pokémon Sword and Shield' Crown Tundra DLC: List of Returning Pokémon

Crown Tundra Pokedex, New Pokemon & Legendaries List

All Confirmed Returning Pokémon In Sword & Shield's Crown Tundra DLC

List of New Pokemon in The Isle of Armor and The Crown Tundra Expansions - Pokemon Sword and Shield Guide - IGN

All 105 returning pokémon in The Isle Of Armor DLC leaked