Johnny is an antagonist that appears in the Sonic the Hedgehog series. He is a villainous robot pirate who serves as the right-hand man of Captain Whisker and a feisty and speedy competitor on the sea. He was created by Dr. Eggman and Eggman Nega for the purpose of finding and obtaining the Jeweled Scepter. In Sonic Rush Adventure, the player can find Johnny at seven locations across the Sea Chart. When traveling to these locations, the player can challenge Johnny to a waterbike race. If Sonic wins, the player is given a Chaos Emerald.