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IMDbPro

Brian Mahoney(I)

  • Actor
  • Additional Crew
  • Sound Department
IMDbProStarmeterSee rank
Brian Mahoney
Known primarily for his supporting lead role as Detective Duffy in The Boondock Saints film series starring Willem Dafoe.

Born in the Boston area and raised outside Chicago, Brian got his first stage experience singing with the Chicago Symphony Orchestra as a member of the renown Glen Ellyn Children's Chorus. There he was trained by original founder Barbara Born, to sing classical symphonies in French, German and English, for world famous conductors including George Solti, and culminating with his solo performance as the Christ Child in a French symphony with the full Chicago Symphony Orchestra.

After graduating high school in Western Michigan, Brian enrolled in the Flight Technology Bachelors program at Embry-Riddle Aeronautical University and flew Cobra helicopters for the US Army. He resigned after ten years to pursue his lifelong goal of professional acting, and immersed himself with live theater training and performances in Monterey/Carmel California.

In 2013, Brian was finally able to merge his extensive aviation vocabulary with acting, when he was hired to consult and perform voiceover/looping dialogue for studio films, beginning with Lone Survivor, Fury and Suicide Squad. He now splits his time and energy working to become a better actor on camera and in front of a microphone.
  • More at IMDbPro
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    Known for

    Willem Dafoe in Les anges de Boston (1999)
    Les anges de Boston
    7.6
    • Detective Duffy
    • 1999
    Sean Patrick Flanery and Norman Reedus in Les anges de Boston 2 (2009)
    Les anges de Boston 2
    6.2
    • Duffy
    • 2009
    Jennifer Lopez in Un voisin trop parfait (2015)
    Un voisin trop parfait
    4.7
    • Couper
    • 2015
    La Momie (2017)
    La Momie
    5.4
    • Sound Department
    • 2017

    Credits

    Edit
    IMDbPro

    Actor



    • John C. Reilly, Adrien Brody, Jason Clarke, Solomon Hughes, Sean Patrick Small, Hadley Robinson, and Quincy Isaiah in Winning Time: The Rise of the Lakers Dynasty (2022)
      Winning Time: The Rise of the Lakers Dynasty
      8.3
      TV Series
      • Sportswriter
      • 2022
    • Lifetime
      Short
      • Andrew
      • 2021
    • Ryan Gosling in First Man : Le Premier Homme sur la Lune (2018)
      First Man : Le Premier Homme sur la Lune
      7.3
      • Fire Inspector
      • 2018
    • Fast & Furious 7 (2015)
      Fast & Furious 7
      7.1
      • Drone Tech
      • 2015
    • Jennifer Lopez in Un voisin trop parfait (2015)
      Un voisin trop parfait
      4.7
      • Couper
      • 2015
    • Liars All (2013)
      Liars All
      4.2
      • British Concierge
      • 2013
    • Mena Suvari, Jason Biggs, Alyson Hannigan, Chris Klein, Natasha Lyonne, Thomas Ian Nicholas, Tara Reid, Seann William Scott, and Eddie Kaye Thomas in American Pie 4 (2012)
      American Pie 4
      6.7
      • Police Officer
      • 2012
    • Matt Damon and Emily Blunt in L'Agence (2011)
      L'Agence
      7.0
      • Fish Market Manager (uncredited)
      • 2011
    • Sean Patrick Flanery and Norman Reedus in Les anges de Boston 2 (2009)
      Les anges de Boston 2
      6.2
      • Duffy
      • 2009
    • Rob Brown in The Express (2008)
      The Express
      7.2
      • Buffalo Doctor
      • 2008
    • Jason Bateman, Jamie Foxx, Chris Cooper, and Ashraf Barhom in Le Royaume (2007)
      Le Royaume
      7.0
      • Pitcher
      • 2007
    • Jarhead: La Fin de l'innocence (2005)
      Jarhead: La Fin de l'innocence
      7.0
      • Priest (uncredited)
      • 2005
    • Stephen Baldwin, Mel Blanc, Alan Cumming, Mark Addy, Kristen Johnston, and Jane Krakowski in Les Pierrafeu à Rock Vegas (2000)
      Les Pierrafeu à Rock Vegas
      3.7
      • Audience Man
      • 2000
    • Willem Dafoe in Les anges de Boston (1999)
      Les anges de Boston
      7.6
      • Detective Duffy
      • 1999
    • Jeff Daniels and Michael Richards in Le Plus Fou des Deux (1997)
      Le Plus Fou des Deux
      5.8
      • Man in Bar
      • 1997

    Additional Crew



    • Will Ferrell and Jamie Foxx in Backstreet Dogs (2023)
      Backstreet Dogs
      6.3
      • adr performer
      • 2023
    • Ron Perlman, Michelle Yeoh, Peter Cullen, Pete Davidson, David Sobolov, Tongayi Chirisa, Dominique Fishback, Anthony Ramos, and Liza Koshy in Transformers: Rise of the Beasts (2023)
      Transformers: Rise of the Beasts
      6.0
      • looper
      • 2023
    • Pierce Brosnan, Colin Firth, Cher, Andy Garcia, Meryl Streep, Stellan Skarsgård, Christine Baranski, Julie Walters, Dominic Cooper, Amanda Seyfried, Hugh Skinner, Jeremy Irvine, Alexa Davies, Lily James, Jessica Keenan Wynn, and Josh Dylan in Mamma Mia! Here We Go Again (2018)
      Mamma Mia! Here We Go Again
      6.6
      • adr performer
      • 2018
    • Independence Day: Resurgence (2016)
      Independence Day: Resurgence
      5.2
      • additional voices
      • 2016

    Sound Department



    • La Momie (2017)
      La Momie
      5.4
      • adr performer
      • 2017

    Self-verified on IMDbPro

    • Gender / Gender identity
      • Male

    Did you know

    Edit
    • Trivia
      As a member of the renowned Glen Ellyn Children's Chorus, Brian sang with the Chicago Symphony Orchestra for three seasons, in German, French and English.

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