Quoted By:
>default Meowth
>Venonat
>Krabby
>Seedot
>Shroomish
>Cacnea
>Shinx
>Cherubi
>Glameow
>Spiritomb
>Munna
>Pidove
>Blitzle
>Drilbur
>Sewaddle
>Darumaka
>Yamask
>Deerling
>Klink
>Bouffalant
>every starter and legendary not from gen I
are the mons from gen I-V that have never been in a regional dex since their debut (or in Kantomons case, the Johto games). That said, Pokemon like the Hitmons, Tympole, Maractus and Joltik are confirmed to be in the game after missing every dex since their debut.
Not to mention there may be Pokemon you can only catch in Sword/Shield's postgame.
