Oddish, Gloom, and Vileplume are three of 150 different designs conceived by Game Freak's character development team and finalized by Ken Sugimori for the first generation of Pocket Monsters games Red and Green, which were localized outside of Japan as Pokémon Red and Blue.
The Pokémon Vileplume, of the Pokémon game franchise was created based on the rafflesia arnoldii