Abraham (1 episode)

Wheeler

Sheriff Roy Pulsipher

Detective Frank Cosgrove (1 episode)

Major Riddick

Greg Albright

Self (1 episode)

Mark Titus

Jackson

Machine Head (voice) (2 episodes)

Bill Weboy

Sean Meyers

Steve Trevor (voice)

George

Jim Hunt

Utah Defense Attorney John O'Connell

Steve Forsing

John F. Kennedy

Bottles

Charlie Haverford (20 episodes)

Dodd Gerhardt (10 episodes)

Steve Forsing

Jack

Robert Kennedy

Michael Westen (cameo)

Director

Captain J.J. Jones

Paul

Michael Westen (111 episodes)

Director (1 episode)

William Ivers (5 episodes)

Clay Driscoll

Steve Wagner (1 episode)

Cal Percell

Todd Kendrick (1 episode)

Vance

Eric

Detective David Creegan (13 episodes)

Pascal (as Jeff Donovan)

(1 episode)

Robert Jennings

Jeffrey "Jeff" Patterson

Julio

Brad Urich (5 episodes)

Tom (2 episodes)

Bobby

Agent #1

Thomas Mason

Kyle/John Doe (1 episode)

Kyle (1 episode)

Hotel Employee (uncredited)

Bobby Webber (1 episode)

Randy

Addison

Frank Cosgrove (32 episodes)

Eddie Nicodos (1 episode)

Jacob Reese (1 episode)

Pete Gulley