Mr. Terrific and an elite Justice League squad embark on a do-or-die mission to unravel the mysteries of the epic DC K.O . event! As the tournament for the fate of the Earth heats up, Mr. Terrific assembles an elite Justice League squad—chosen from the time-displaced heroes from "We Are Yesterday"—to face a threat hidden within the planet’s core! With the rest of the League occupied by Darkseid’s brutal battle for the role of King Omega, and the Watchtower under siege from fearsome parademons, only Michael Holt and his hand-picked heroes stand between humanity and the demonic Neron! It’s a mission to Hell and (hopefully) back from the pages of Justice League Unlimited #12-16, from the superstar team of writer Mark Waid and artist Dan Mora! Mark Waid is an Eisner Award–winning writer whose celebrated career spans iconic runs on The Flash , Kingdom Come , World’s Finest , and Daredevil . Known for his mastery of continuity and heart-driven storytelling, Waid has shaped the legacy of DC’s greatest heroes. Dan Mora is a Costa Rican artist celebrated for his dynamic compositions and cinematic energy. His work includes Batman/Superman: World’s Finest , Detective Comics , Once & Future , and Shazam! . Mora’s art is defined by its expressive characters, kinetic motion, and vibrant modern style that continues to shape DC’s visual identity.