Mark Wahlberg
Spenser

Winston Duke
Hawk

Alan Arkin
Henry

Iliza Shlesinger
Cissy Davis

Michael Gaston
Captain Boylan

Bokeem Woodbine
Driscoll

Marc Maron
Wayne Cosgrove

James DuMont
Bentwood

Post Malone
'Squeeb'

Colleen Camp
Betty

Hope Olaidé Wilson
Letitia

Kip Weeks
Macklin

Brandon Scales
Terrence Graham

Ayana Brown
Federal Agent Burton

Dustin Tucker
Federal Agent Fingle

Josh Cronin
Minimart Clerk

Alfred Briere
Scott Traylor

Rebecca Gibel
Laurie Boylan

Alexandra Vino
Gloria Weisnewski

Patty Ross
Mrs. Weisnewski

Anthony "Ace" Thomas
Lego's Owner

Johnny Alves
Boxing Trainer

Rich Skinner
Billy

Donald Cerrone
'Big Boy'

Christopher Weigel
Hipster

Arthur Wahlberg
Archie

Thomas Rosales Jr.
Marcelo

Ricardo Pitts-Wiley
Baptist Minister

Bianca de la Garza
News Anchor #2

Marina Varano
Vegan Diner #1

Andresito Germosen De La Cruz
Van Driver

Eric Weinstein
Truck School Student

Jeffrey Vincent Thompson
Batallion Chief Foley

Kevin McCormick
Detective Mulligan

Leah Procito
Salon Girl

Regis Prograis
Trinitario #1

Brandon M. Shaw
Trinitario #3

Wayne Dalglish
Police Officer #2

Dennis Pietrantonio
Police Officer #6

Billy Concha
Officer Billy

Cary 'Big Shug' Guy
Prison Guard #1

Paul Noonan
Boston Police Officer (uncredited)

Cassie Ventura
Elise (uncredited)