
Actor
Glenn Howerton
Born 1976 · Okinawa, Japan
Glenn Franklin Howerton III (born April 13, 1976) is an American actor of television and film. He is best-known for his role as Dennis Reynolds on FX's It's Always Sunny in Philadelphia (on which he is also a writer and executive producer). He also played Corey Howard on the short-lived 2002 sitcom That '80s Show. Description above from the Wikipedia article Glenn Franklin Howerton, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Acting

The Simpsons
Peter Linz (voice) · 1989

Fargo
Don Chumph · 2014

Family Guy
(voice) · 1999

Serenity
Lilac Young Tough · 2005

It's Always Sunny in Philadelphia
Dennis Reynolds · 2005

Crank
Hospital Doctor · 2006

The Hunt
Richard · 2020

American Dad!
Animal Control Guy #1 (voice) · 2005

ER
Nick Cooper · 1994

Crank: High Voltage
Doctor (uncredited) · 2009

BlackBerry
Jim · 2023

The Strangers
Mike · 2008

Abbott Elementary
Dennis · 2021

Welcome to Wrexham
Self · 2022

Everything Must Go
Gary · 2011

Conan
Self · 2010

Must Love Dogs
Michael · 2005

A.P. Bio
Jack Griffin · 2018

Sirens
Ethan Corbin II · 2025

The Mindy Project
Cliff Gilbert · 2012

Coffee Town
Will · 2013

Jimmy Kimmel Live!
Self · 2003

The Job
Young Guy · 2001

The Kelly Clarkson Show
Self · 2019
