Starro is an alien conqueror that resembles a gigantic version of an Earth starfish. It goes from planet to planet and exerts its mind control powers as well as using psychic clones to take over the minds of individuals. However, Starro's campaign came to a halt when it arrived in Happy Harbor, Rhode Island on Earth. It was defeated by the Justice League. Starro attempted many more times to take over Earth but failed, including during a battle against Batman and the Green Lantern Guy Gardner. The fight was captured on camera and described in a newspaper article.