Steven Universe: Harmony — Boom! Studios
Issue: #1
As Steven helps Sadie cope with quitting her job at the Big Donut and losing Lars, Steven and the Gems must work together to deactivate an old Diamond Authority artifact called the Harmony Core before it destroys Earth.
First appearances: Aquamarine
Creators: Marguerite Sauvage, Mike Fiorentino, Michael Moccio, Savanna Ganucheau, Grace Park, Mollie Rose, Meg Casey, Veronica Fish, Sara Talmadge, Shane-Michael Vidaurri, Matthew Levine, Brittany L. Williams
Characters: Sour Cream, Opal, Sadie Miller, Peridot, Barbara Miller, Steven Universe, Topaz, Greg Universe, Amethyst, Jenny Pizza, Buck Dewey, Aquamarine, Connie Maheswaran, Garnet, Pearl