The Flash Season 4 @ Comic-Con San Diego 2017

official first look and trailer for The Flash Season 4 THE FLASH cast and executive producers offered their first glimpse at the upcoming fourth season, when they debuted an exclusive sizzle reel for Comic-Con fans gathered in Ballroom 20. The reel showed a very different Team Flash, one led by Iris West in the Cortex and Cisco & Wally in the streets, but audiences were also given hope for a happy return for The Fastest Man Alive, Barry Allen.