The special Pikachu unable to generate electricity in Pokémon Pokopia is Peakychu.
Peakychu is one of the named special Pokémon encountered as Ditto restores habitats. Unlike an ordinary Pikachu, Peakychu has lost the ability to generate electricity. This distinctive story detail gives the character a problem that fits Pokopia’s broader theme of helping Pokémon recover and adapt to a damaged world.
The name Peakychu is a character-specific name, not a new standard Pokémon species or an evolution. Peakychu remains a Pikachu, just as other named figures in the story remain recognizable Pokémon with unusual histories or roles.
It is easy to confuse Peakychu with Pikachu variants from other Pokémon media, such as Pikachu Libre or detective-themed Pikachu. Those are separate character concepts. In Pokopia, the defining fact about Peakychu is the loss of its electrical ability.