Board Thread:Questions and Answers/@comment-3010092-20140828061134/@comment-25866432-20140828184002

No. He was an agent prior to Agents of S.H.I.E.L.D. And they expalin how he was brought back in Agents of S.H.I.E.L.D. They intentionally put him in those movies as a kind of glue or connection/common element to the Marvel movies. Not sure why you think that's strange.