
Stephen Root (born November 17, 1951) is an American actor. He has starred as Jimmy James on the NBC sitcom NewsRadio (1995–1999), as Milton Waddams in the film Office Space (1999), and voiced Bill Dauterive and Buck Strickland on the animated series King of the Hill (1997–2010, 2025–present).
Root has appeared in numerous Coen brothers films, including O Brother, Where Art Thou? (2000), The Ladykillers (2004), No Country for Old Men (2007), The Ballad of Buster Scruggs (2018), and The Tragedy of Macbeth (2021). Other notable film roles include Dave (1993), Dodgeball (2004), Idiocracy (2006), Cedar Rapids (2011), Selma (2014), Trumbo (2015), Get Out (2017), and On the Basis of Sex (2018).
His television roles have included Capt. K'Vada in the Star Trek: The Next Generation two-part episode "Unification" (1991) and Hawthorne Abendsen in seasons 2–4 of the series The Man in the High Castle. He has supporting roles in a variety of HBO series, including Boardwalk Empire, True Blood, Perry Mason, and Succession. He starred as Monroe Fuches in the HBO dark comedy series Barry, for which he was nominated for a Primetime Emmy Award for Outstanding Supporting Actor in a Comedy Series in 2019.
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Bildorf (voice)
Professor O'Callaghan (voice)
Michael Kirkwood
Detective Rennert
Dick (voice)
Dick / Dentist's Father (voice)
Mr. Lager
Bill Prady
Martin (voice)
Judge Murphy Wicks
Gromflomite General (voice)
Raymond
Captain K'Vada
Bob Mayer
Floyd (voice)
Dan
Harbin
Lynn Boyle
Jackson (voice)
Bill Dauterive (voice)
Ricardo Collini
Bud Gleeful (voice)
Bud Gleeful / Additional Voices (voice)
John Pratt
Jack Haly (voice)
Jeremiah Whitewhale (voice)
Gordon
Eddie
Ron Petkus
Ethan Melman
Charlie Lane
Exterminator
Brian (voice)
Gaston Means
Bubbles (voice)
Al Crannis
Mike Reardon
J.W. Guidebook (voice)
Brandon McCafferty
Ferret
John Tremaine Jr.
Ed Vanderspeigle
Pop-Pop Porter (voice)
Texan (voice)
Chester Yapsby (voice)
Phillipe Bullion / Pop-Pop Porter (voice)
Mr. Nevius (voice)
Memphis (voice)
White Lotus Leader / Gommu / Chung (voice)
Gommu (voice)
Spirit of Death
Mr. Willard
Trumpet Playing Mental Patient
Frank / Start (voice)
Martin Mertens (voice)
Monroe Fuches
Hawthorne Abendsen
Judge Walsh
Val Yor (voice)
Dean Stuart / Additional Voices (voice)
Stuart (voice)
Additional Voices (voice)
Prime Monister (voice)
Jim Hudson
Football Coach
Mayor Toadstool (voice)
Jimmy James
Brother Timothy
Brian
Gene Jakobowski (voice)
General Stomtonovich
Professor Anders (voice)
Jaan Laaman
Hank Maestro
Elliot
Reverend Amos Howell / Unity (voice)
Doc / Merrimack / Mr. Snuggles (voice)
Police Sgt.
Woozy Winks (voice)
Penguin / Planet Master (voice)
Penguin / Carnival Barker (voice)
Killer Croc / Penguin (voice)
Harvey Toplin
Cap Collins
Tony Bustamante
Carty
Houston Plant Manager
Rexford / Zach / Rover (voice)
Zach / Bread Monster (voice)
Rexford / Trees / Video Person (voice)
Grampa (voice)
Mildew (voice)
Sheriff (voice)
Sheriff / Sentry #2 (voice)
Man Who Hires Wells
Salt (voice)
Self
Dr. Drake Kelson
Arthur Hammond
Hymie King
Lortha Peel
Mortimer Begoyle
Neil Mullin
Dr. Hepa
Berg
Bubbles (voice)
Judge Hector "The Hangman" (uncredited)
Cockmando (voice)
Chris Kraft
Col. Al Lingo
Mr. Andrews (voice)
The Nanomachines (voice)
Gary (voice)
Maynard Barnes
Aardvark Dad (voice)
Fernand Gudge
Johnny Forrealz
Dean Burbage
Gordon
Phil Asher
Bernard (voice)
J. Edgar Hoover
George MacPherson
Dr. Mindala
Sheriff Brock
Dwight Dixon
Jeff Strawberry (voice)
Milton Waddams
Cat Man (voice)
Police Chief Earl Grant (voice)
Lance (voice)
Roger
Theodore 'Teddy' Roosevelt (voice)
Walt Breckman
Dr. Rostrum (voice)
Teller (segment "Near Algodones")
Coontz
Chief Cogburn / Merie Cogburn (voice)
Merie Cogburn (voice)
Chief Cogburn (voice)
Dr. Freeman
Dr. Kirby
Porter
Burt
Governor Haskell
Mr. Fyde / Avacadwoe / Hush Muffleman (voice)
Sheriff Bobby
Tony
Pascal
Curt Reynolds
Daddy Mac
Max Alvarez
Ron Walton
Judge Taylor
Kevin McDonald
Zor-El (voice)
Turtle (voice)
Radio Station Man
Arthur Koehler
Warlock G (voice)
Warlock G / Mr. Assam (voice)
Warlock G / Police Officer (voice)
Mike Cook
Habberman
Mr. Tucker
Mr. Chaney
Title Narrator (voice)
Mr. Big Corporation (voice)
John Lloyd
Mr. Hentley
Zeb (voice)
Glem Blorchman (voice)
Farmer (voice)
Graham Dunbar
Charles Thompson
Hattanzo the Drifter (voice)
Pat Jennings
Mr. M / Bob / Additional Voices (voice)
Arthur Parsons
Cringer (voice)
Dennis Mansky
Gus Lacey
Cringer / Battle Cat (voice)
Kevin McDonald
Major Moreland
Mr. Sweeney
Clarence Sweetwater
KC
DEA Agent (Toilet)
Talent Scout (voice)
Solomon Smythe
Chode (voice)
Dr. Donovan (voice)
RKO Guard
Self
Gene
Sherrif Wynan
Principal Doppler
Mark (voice)
Dr. Rogers
Billy Cusimano
Chet
Senator Culpepper
Gary Murray
Uncle Henry (voice)
Professor Brown
R.O
Greenie
Vince Masters
Agent Flannigan
Ken Russel
Don Durenberger
Burt (voice)
Brendon (voice)
Mark Hastings
Glover
Uncle Danny
Goodman
Petey's Father (voice)
Cameron
Fred Franklin
Chris
F.A.A. Negotiator
Todd
Self
Uncle Henry / Crows (voice)
Suds
Bill Krogstad
Jail Tattoo Artist (voice)
Major Moreland
Cowboy Gambler (voice; uncredited)
Mickey
Wyck
Hugh
Richard Clarke
Sculptor
Self
Secretary of War Edwin Stanton
Gerald Adams
Dutch
Kane Cohen
Senator Larder
Awakened Neighbor
Fenton
Herb
Steve
Self
Big Ducky (voice)
Morty Van Rookle
Frank
Father Browning
Ed Kirkman
Self
Analyst
Remington
Randolph
Chode (voice)
Floyd / Additional Voices (voice)
Avery Boomer
Mr. Crenshaw
Dwight Nestor
Lance (voice)
The Jackalope (voice)
George
Nick Celisco
Self - Panelist