Justice League Dark: Apokolips War

Following his two failed attempts at conquering Earth, Darkseid and his armies continue conquering other worlds. The Justice League devise a plan to defeat Darkseid by taking his war to Apokolips while leaving the Teen Titans on Earth to defend it. Unbeknownst to them, Darkseid spies on the League through Cyborg, now knowing their plan. As a result, the League are overwhelmed and defeated by Paradooms—genetic hybrid creatures made from Parademons and Doomsday—and a majority of the heroes from both the League and the Titans are killed during the fight, whereas those who survive are placed into Darkseid's slavery.