Michael C. Mahon

Mercy

Booking Sergeant · 2026

Side Quest

Joshua · 2025

Fatal Affair

Driver · 2020

A Tale of Two Coreys

Teacher · 2018

The Orville

Altox · 2017

His Secret Past

Peterson · 2016

Get a Job

Braddock · 2016

The Flight Before Christmas

Santa Claus · 2015

Ominous

Rachel's Doctor · 2015

Kidnapped: The Hannah Anderson Story

Reporter 1 · 2015

High School Possession

Coach Burdette · 2014

Gangster Squad

Citz Hall Reporter · 2013

Christmas Twister

Doug · 2012

Scandal

Billy Joe Lee · 2012

Private Practice

Detective Smith · 2007

Gridiron Gang

Field Coach · 2006

How I Met Your Mother

Grumpy Man · 2005

Boston Legal

Officer James Gilmore · 2004

Tomb of Terror

Detective Greenberg · 2004

Las Vegas

Ben Wilcox · 2003

Brimstone

Carl Traynor · 1998

The King of Queens

Mike · 1998

Beyond Belief: Fact or Fiction

Mr. Baker (segment "Precious") · 1997

Profiler

Adam Thompson · 1996

Shattered Mind

Jack · 1996

Josh Kirby... Time Warrior: Last Battle for the Universe

Donald Kirby (as Michael Mahon) · 1996

Oblivion 2: Backlash

Sidekick · 1996

Baywatch Nights

Clean Cut · 1995

ER

Joe · 1994

Dark Angel: The Ascent

Detective Greenberg · 1994