Which Pokémon occupies National Pokédex position 100?

Voltorb occupies National Pokédex position 100. It is an Electric-type Pokémon first introduced in the original Kanto games, Pokémon Red and Green, and their later international versions.

Voltorb resembles a Poké Ball, making it a memorable example of Pokémon designs that imitate everyday objects. In the games, it is often encountered in locations associated with machinery, including the Power Plant. Its species name and appearance also support the idea that it is an artificial or electronic Pokémon.

Voltorb evolves into Electrode at level 30. The two species are closely associated with one another, but they have separate National Pokédex numbers: Voltorb is 100 and Electrode is 101.

Players sometimes confuse Voltorb with Pikachu because both are Electric-type Pokémon, or with Electrode because of their shared Poké Ball-like design. The exact number 100 belongs to Voltorb.