15 Supporting Comic Book Movie Characters Who Stole The Show

15. Agent Coulson

From lurking in the shadows of Tony Stark's marauding ego in Iron Man and it's sequel, to his heroics in The Avengers, Agent 'Phil' Coulson is the definition of a supporting character brought to the forefront by a terrific performance.

This is courtesy of Clark Gregg, who before entering the MCU was bit parting in the likes of We Were Soldiers and In Good Company. Audiences lapped up his knowing smirks and childish adoration of Captain America and, come his tragic demise on screen, his mark was pertinent enough to merit a rebirth on the small screen with a starring role in Marvel's Agents of S.H.I.E.L.D.