John Marcus "Scoot" McNairy (born November 11, 1977) is an American actor and film producer. He is known for his roles in films such as Monsters (2010), Argo, Killing Them Softly (both 2012), Batman v Superman: Dawn of Justice (2016), Speak No Evil, and Nightbitch (both 2024).
On television, McNairy starred as Gordon Clark in the AMC period drama Halt and Catch Fire (2014–2017), Bill McNue in the Netflix miniseries Godless(2017), Walt Breslin on Netflix's Narcos: Mexico (2018–2021), Tom Purcell on the third season of True Detective (2019), and Rod Rosenstein in the Showtime miniseries The Comey Rule (2020). His accolades include an Independent Spirit Award and a Screen Actors Guild Award.
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Known For

A Complete Unknown
Woody Guthrie
2024

Nightbitch
Husband
2024

The Line
Detective
2024

Speak No Evil
Ben Dalton
2024

Blood for Dust
Cliff
2024
Fairyland
Steve Abbott
2023

Taurus
Ray
2022

Lyle, Lyle, Crocodile
Joseph Primm
2022

The Parts You Lose
Ronnie
2019

Destroyer
Ethan
2018

The Legacy of a Whitetail Deer Hunter
Greg
2018

War Machine
Sean Cullen
2017

Aftermath
Jacob "Jake" Bonanos
2017

Sleepless
Rob Novak
2017

Batman v Superman: Dawn of Justice
Wallace Keefe
2016

Lamb
Jesse
2015

Our Brand Is Crisis
Buckley
2015

Black Sea
Daniels
2014

Gone Girl
Tommy O'Hara
2014

The Rover
Henry
2014

Frank
Don
2014

Non-Stop
Tom Bowen
2014

Marvel One-Shot: All Hail the King
Jackson Norriss
2014

12 Years a Slave
Brown
2013

Touchy Feely
Jesse
2013

Dragon Day
Phil
2013

Argo
Joe Stafford
2012

Promised Land
Jeff Dennon
2012

Killing Them Softly
Frankie
2012

Angry White Man
Walt
2011

A Night in the Woods
Brody Cartwright
2011

The Off Hours
Corey
2011

Wreckage
Frank Jeffries
2010

Monsters
Andrew Kaulder
2010

Mr. Sadman
Stevie
2009

Murder 101: The Locked Room Mystery
Panache
2008

In Search of a Midnight Kiss
Wilson
2007

Marcus
Charles
2007

Mr. Fix It
Dan
2006

Art School Confidential
Army-Jacket
2006

Herbie Fully Loaded
Augie
2005

Wonderland
Jack
2003

McCarthy

Cowgirl's Last Ride
Randall

East of Wall
Roy Waters
2025

On the Red Carpet Presents: "A Complete Unknown"
Self
2025

Other Other
Spyro
2024

The Santa Stories
Nate · (1 episode)
2023

Luckiest Girl Alive
Andrew Larson
2022

Blonde
Tommy Ewell / Richard Sherman
2022

Pantheon
Cody / Kurt (voice) · (1 episode)
2022

Pantheon
Soldier (voice) · (1 episode)
2022

Pantheon
Cody (voice) · (6 episodes)
2022

C'mon C'mon
Paul
2021

Renegades: The Bad Boys of NASCAR
Narrator (voice)
2021

A Quiet Place Part II
Marina Man
2021

INVINCIBLE
King Lizard (voice) · (3 episodes)
2021

The Comey Rule
Rod Rosenstein · (2 episodes)
2020

Love Life
Bradley Field · (2 episodes)
2020

Once Upon a Time... in Hollywood
'Lancer' - 'Business Bob' Gilbert
2019

Carl's Motel
Jack
2019

Narcos: Mexico
Narrator (voice) (uncredited) · (9 episodes)
2018

Narcos: Mexico
Walt Breslin · (21 episodes)
2018

Long Way Back Home
Red
2018

Godless
Bill McNue · (7 episodes)
2017

Something Elemental: Making 'The Rover'
Self
2014

Halt and Catch Fire
Gordon Clark · (40 episodes)
2014

Fargo
Maurice LeFay · (1 episode)
2014

Off Camera with Sam Jones
Self · (1 episode)
2014

True Detective
Tom Purcell · (8 episodes)
2014

The Napkin
Pete
2012

Wes and Ella
Wes
2010

Everything Will Happen Before You Die
Matt
2010

The Resurrection of Officer Rollins
Shooter
2009

Blind Man
Sparky Collins
2007

Bobby
Beatnik
2006

Murder 101
Panache (uncredited)
2006

Bones
Noel Liftin · (3 episodes)
2005

Sleepover
DJ at Club
2004

White Men in Seminole Flats
Dale
2004
Die by Night
The Life and Deaths of Wilson Shedd

My Name Is Earl
Bed Bug · (1 episode)
2005
Sexless
Ryan
2003
Wrong Numbers
Russell

How I Met Your Mother
Fast Food Worker · (1 episode)
2005

D.E.B.S.
Stoner
2004

The Shield
Doug Obermyer · (1 episode)
2002

CSI: Crime Scene Investigation
Vitas Long · (1 episode)
2000
Untitled Liz Meriwether Series
(0 episode)