Clark Gregg

as Self(1 ep)

as Harry Kendall Thaw(6 eps)

as NSA Director Donald Briggs

as Don Hollenbeck

as Lieutenant(3 eps)

as Self

as Vice President Harold Moseley

as Robert Lyndon(2 eps)

as Self

as Alan

as Arthur Sackler(6 eps)

as Ketcher(6 eps)

as Arthur Highsmith(1 ep)

as Dr. Bruce Ivins

as Nick(3 eps)

as Terry Stewart(10 eps)

as Howard Wenke

as Agent Coulson (voice)(2 eps)

as Agent Phil Coulson (voice)(1 ep)

as John

as Phil Coulson (archive footage) (uncredited)(2 eps)

as Self - Actor, "The Avengers"

as Admiral Anton Milius(10 eps)

as James R. Fuller

as Self - Host

as Agent Coulson

as Ron(2 eps)

as Paul

as Calvin Bondurant

as Phil Coulson(1 ep)

as Dr. Mekel

as Self

as Judge(10 eps)

as Self(1 ep)

as Mason Grantz

as Self

as Self

as Self - Guest(1 ep)

as Gerald

as Mr. Markovic

as Phil Coulson(123 eps)

as Sarge(13 eps)

as Judge Klark

as Leonato

as Howard

as Edward Berger

as Nat

as Self(1 ep)

as Agent Phil Coulson

as Phil Coulson (voice)(52 eps)

as Agent Phil Coulson

as Agent Phil Coulson

as Nat Jones

as Agent Coulson

as Agent Coulson

as Vance

as Lord High Charlie

as Agent Coulson

as Nelson Hardwicke

as Henry

as Tom Pullman

as Muckle

as Publisher

as Richard Campbell(88 eps)

as Ben Johnson

as Ray Madison(2 eps)

as FBI Director Ray Madison(1 ep)

as Steckle

as Allen McShane(2 eps)

as Officer Hannagan

as Miller

as Teddy Goodman

as Nelson Primus

as Mr. Hadfield

as Self - Guest(2 eps)

as Eason Jordan

as Paul Outerbridge

as Bill

as William Faulks(2 eps)

as Capt. Tom Metsker

as Harvey

as Supernerd

as Doug Mackenzie

as WDKK Floor Director

as Dickinson

as Michael Casper(8 eps)

as Benjamin Taft

as The Stranger(2 eps)

as Cam(1 ep)

as Hank / Henrietta

as Harris Bragen(1 ep)

as FBI Sniper

as Cop #1

as Bob McGrath(1 ep)

as Ex-Boyfriend

as Dave

as Dr. Walters

as Randy

as Kevin Rooney

as Don Dudley(1 ep)

as Jake Shank

as Staff Sergeant

as Darryl Beekman, Jr.

as Dickinson(1 ep)

as Marty

as Ken O'Donnell(2 eps)

as Patrick Dunne(1 ep)

as Douglas Panton

as Stage Manager

as Stage Manager

as Self - Presenter(1 ep)