David "Dave" Castillo portrayed S.H.I.E.L.D. Agent in Iron Man.
He was also a utility stunts performer in Iron Man, Iron Man 2, The Avengers and the upcoming Guardians of the Galaxy Vol. 2 and a stunt driver in The Avengers and Ant-Man.
He was also a stunt double for Jeff Daniel Phillips in Agents of S.H.I.E.L.D. episode One of Us.