Strange, unidentified Pokemon exist within the franchise with deep world-building, like gym statues and ancient beings.

The world of Pokémon is filled with all forms of powerful, cute and odd creatures ... Reanimated from the fossilized remains ...

The Galar dark-type can evolve into Thievul as part ... this is the most unreliable and time-intensive option of them all — so opt for everything else mentioned above instead.