It was a big day for DC's streaming video service, which they revealed will be called "DC Universe". A Swamp Thing series from Aquaman director James Wan was announced, as were Titans, Young Justice: Outsiders, and Harley Quinn. But noticeably absent was Metropolis, a Superman prequel that Warner Bros. announced earlier this year. According to Deadline,…

Danny Cannon and John Stephens, the producers of Gotham, showed us a world before Batman. And now they will explore Metropolis before Superman. Warner Bros. announced Metropolis today, an all-new live-action drama series to air exclusively on the upcoming DC-branded direct-to-consumer digital service. Set in the wondrous and awe-inspiring City of Tomorrow before the arrival…