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Glenn Howerton as Dennis Reynolds | Always Sunny on FXX

It's Always Sunny in Philadelphia

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Glenn Howerton

Dennis / Executive Producer / Writer

Glenn Howerton headshot wearing a striped shirt with collar and buttons

Career Highlights

Kaitlin Olson headshot wearing a floral high neck top and a green hat

Kaitlin Olson

as Sweet Dee

Kaitlin Olson stars as "Sweet Dee" on the critically-acclaimed FXX original series It’s Always Sunny in Philadelphia.

Danny DeVito headshot wearing a red polo shirt, dark blue zip up, and glasses

Danny DeVito

as Frank

Danny DeVito stars as "Frank Reynolds" in the critically-acclaimed FXX original series It’s Always Sunny in Philadelphia.

Mary Elizabeth Ellis headshot wearing a pink shirt, a pearl necklace, and a short silver wig.

Mary Elizabeth Ellis

as The Waitress

Mary Elizabeth Ellis stars as "The Waitress" in the critically-acclaimed FXX original series It’s Always Sunny in Philadelphia.