Got them all! After opening all of the dates in the Funko Pop Pokémon Advent Calendar I have finally gotten every form of Funko Pop Bulbasaur! : r/bulbasaurmasterrace
Funko Pop! Figures Advent Calendar: Pokemon
Funko Pop Pokemon Advent Calendar 2021 - YouLoveIt.com
Pocket Pop! Pokémon 24-Day Holiday Countdown Calendar