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.

Glenn Howerton

Acting Born April 13, 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.

Known For

Late Night with Seth Meyers

Self - Guest

The Simpsons

Peter Linz (voice)

Family Guy

(voice)

The Kelly Clarkson Show

Self

American Dad!

Animal Control Guy #1 (voice)

Conan

Self

The Late Late Show with James Corden

Self - Guest

The View

Self

Jimmy Kimmel Live!

Self

It's Always Sunny in Philadelphia

Dennis Reynolds

Fargo

Don Chumph

ER

Nick Cooper