ABC Just Released Photos of Agents of S.H.I.E.L.D Season 3

Clark Gregg, who plays Coulson, said his character "is evolving into something else every year."

"This is a guy who was really working within a channel for Nick Fury, knew a lot of secrets, and was a company man," he added. "The past two years have been about that getting exploded and having more responsibility than he ever imagined in a world where S.H.I.E.L.D. is under attack."

He's forced to think about his relationships differently, "and I think that evolution is going to continue.”