The GBC ChaosEgaddulatorRadulatorFinderLocatorrator, better known as the Emerald Radar Radar, or simply Radar Radar is a tracking device that Professor E. Gadd created. It shows the location of the original Emerald Radar, and is first seen in Episode 5. It was lost in the battle during Episode 6, and Wario and Waluigi picked it up. They have been using it to follow the Heroes ever since.