As new TV series "Agents of S.H.I.E.L.D." arrives this fall, a cast of new characters have been introduced to fans of "The Avengers" franchise. With Clark Gregg playing Agent Phil Coulson, a new cast is ready to join S.H.I.E.L.D. As of now a slew of promo photos have appeared online, with more photo stills from the trailer as well. So without further ado, here is the "Agents of S.H.I.E.L.D." cast photo gallery.