Back in 2019, Niantic and The Pokemon Company did something that fans did not expect; after 14 years of going unused and forgotten, Shadow Pokemon returned to the franchise through Pokemon GO. This concept was originally used in Pokemon Colosseum, a GameCube title that many fans either loved or hated. Despite that, Colosseum and its sequel, Pokemon XD: Gale of Darkness, live on in Pokemon GO as rewards for defeating Team Rocket.