Steven Universe (2013-) Steven Universe is set in the fictional town of Beach City, located on the Delmarva Peninsula[4] on the American East Coast. The Crystal Gems live in an ancient beachside temple and protect humanity from monsters and other threats. The Gems are ageless alien warriors who project female humanoid forms from magical gemstones at the core of their being. The Crystal Gems comprise Garnet, Amethyst, Pearl and Steven—a young, half-human, half-Gem boy who inherited his gemstone from his mother, the Crystal Gems' former leader Rose Quartz. As Steven tries to understand his gradually-expanding range of powers, he spends his days with his father Greg, his friend Connie, his magical pet lion, other residents of Beach City, and the Gems. He explores the abilities inherited from his mother, which include fusion—the ability of Gems to merge their bodies and abilities to form new, more-powerful personalities.The series's first season gradually reveals that the Crystal Gems are remnants of a great interstellar empire. During their missions they visit ruins that were once important to Gem culture but have been derelict for millennia. The Gems are cut off from the Gem homeworld, and Steven learns that many of the monsters and artifacts they encounter are Gems who were corrupted by a Gem weapon of mass destruction and can no longer maintain rational, humanoid form. By the end of the first season, Steven learns that, millennia ago, the Gem empire intended to sterilize the Earth to incubate new Gems, but Rose Quartz led her supporters, the Crystal Gems, in a violent and apparently successful rebellion against this genocidal plan. In the present, the Gem empire's machinations again extend towards Earth with the arrival of hostile envoys Peridot and Jasper....