premise: Pearl (Steven Universe) is a real alien being.
hypothesis: Pearl is a fictional character from the 2013 animated series Steven Universe , created by Rebecca Sugar . She is a `` Gem '' , a fictional alien being that exists as a magical gemstone projecting a holographic body . Steven Universe . It is the coming-of-age story of a young boy named Steven Universe , who lives in the fictional town of Beach City with the `` Crystal Gems '' -- Pearl , Garnet , and Amethyst , three magical humanoid aliens .