What category is officially assigned to Pikachu in the Pokédex?

Pikachu’s official Pokédex category is the Mouse Pokémon.

Pikachu is an Electric-type Pokémon first introduced in Generation I. Its yellow body, pointed ears, red cheek patches, and lightning-bolt-shaped tail made it visually distinctive from the beginning. The electric sacs in its cheeks are a recurring part of its fictional biology and abilities.

The category name is separate from Pikachu’s species name in other languages and from its type. Pikachu is an Electric type, but its Pokédex category is Mouse Pokémon. This distinction matters because Pokédex entries often describe a creature’s category, while battle classifications describe elemental types such as Water, Fire, or Electric.

Pikachu became the franchise mascot after gaining a central role in the anime, where it partnered with Ash Ketchum. Although Pikachu was not the first Pokémon created, its anime prominence and recognizable design made it the character most strongly associated with Pokémon’s global identity.