Which Pokémon is listed as No. 001 in the National Pokédex?

Bulbasaur is listed as No. 001 in the National Pokédex.

Bulbasaur is a dual Grass- and Poison-type Pokémon introduced in the original Pokémon Red and Green games. It is one of the three starter Pokémon offered to players at the beginning of the Kanto adventure, alongside Charmander and Squirtle.

Its design combines a small, squat creature with a plant bulb growing on its back. That bulb is central to the species’ identity and is reflected in Bulbasaur’s name and artwork. Bulbasaur evolves into Ivysaur and then Venusaur.

The Pokédex number is not a ranking of strength or popularity. It is an index position, and Bulbasaur occupies the first place in the original National Pokédex. In the anime, Ash also received a Bulbasaur, helping make the species familiar to viewers worldwide.