Team GO Rocket is a group of Team Rocket Grunts that are found in Pokémon GO. They are found around certain Pokéstops. The player can battle them and if they win, the grunt will leave one of their Pokémon. This Pokémon is called a Shadow Pokémon and has a dark aura. The player can purify it using Candy and Stardust, and once purified, it becomes more powerful.