Jason Todd has left the Arkham Knight identity behind and reinvented himself as the Red Hood — a vigilante who operates by a simpler code than the rest of the Bat Family. He kills his enemies. After a month dismantling Gotham's criminal networks, Red Hood intercepts an arms deal between Black Mask's and Penguin's gangs, eliminates everyone present, and extracts a single piece of intelligence: a weapons shipment at a nearby dock. He clears the dock and takes Black Mask's location from the last man left standing.
The confrontation with Roman Sionis ends the way most of Red Hood's confrontations end. After fighting through waves of henchmen, Red Hood beats Black Mask down, drags him to a high window, and sends him through it with a parting word: "Say hi to Joker for me."