Glenn Howerton is an American actor born April 13, 1976; TMDB records his place of birth as Okinawa, Japan. He is best known as a co-creator and star of the long-running dark comedy series It's Always Sunny in Philadelphia (2005), in which he has played a lead role since its inception. His work on the series has also included writing and producing credits, reflecting a hand in shaping the show creatively. He has taken on additional television and film roles alongside the series. His career remains closely tied to that signature comedic role. Read more