• English / United States: Nurse Joy's Pikachu
• Japanese / Japan: ジョーイ のピカチュウ
• Japanese (Romanized) / Japan: Joy no Pikachu
• Japanese (Trans) / Japan: Joy's Pikachu

Nurse Joy's Pikachu used their electricity to act as a backup power generator when Team Rocket cut off the main power source at the Viridian City Pokémon Center. They then helped to defend Ash Ketchum and Pikachu who were being attacked by James's Koffing and Jessie's Ekans. Ultimately, with the help of Pikachu they were able to thwart Team Rocket's plans and help prevent them from stealing any of the Pokémon stored at the Pokémon Center.