https://wccftech.com/pokemon-sword-and-shield-missing-pokemon-modders/

Pokemon Sword And Shield have been released just a couple of days ago on Nintendo Switch worldwide, and modders have already started working their magic, adding missing Pokemon to both games.

Modder SciresM confirmed on Twitter earlier today that he has managed to add missing first generation Pokemon to the games. Some of the animations are off, stats are broken, but it seems like everything works fine for the most part.