The special Pikachu who lost its ability to generate electricity is called Peakychu.
Peakychu is one of Pokémon Pokopia's memorable named individuals. Unlike an ordinary Pikachu, this character has lost the ability to generate electricity, giving it a distinctive personal story within the game's abandoned and recovering world.
The name is easy to confuse with Pikachu and Pichu. Pikachu is the familiar Electric-type species, while Pichu is its smaller pre-evolution. Peakychu is a special character name used in Pokopia for a particular Pikachu who has an unusual condition.
Peakychu is part of a broader group of story characters built around modified or exaggerated versions of known Pokémon. Smearguru is an especially talented Smeargle, Mosslax is a Snorlax covered in plant growth, and DJ Rotom possesses a stereo system.