Cy-Bugs are a species of insectoid viruses native to the Hero's Duty arcade cabinet and the secondary antagonists of Wreck-It Ralph. Originally made for use as adaptable robotic toys, they were later weaponized by their developers, who saw military use in them. After Ralph traveled to the game to receive a medal, he accidentally brought one into Sugar Rush, where it rapidly reproduced, destroying the environment and corrupting King Candy into one of their own. They were defeated after Ralph causes Sugar Rush's Diet Cola Volcano to erupt, forcing them to fly into a beacon of light. They play minor roles in the third part of Disney vs Non-Disney Villains and the second part of Free for All Villains Tournament.