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Kaitlin Olson as Sweet Dee | Always Sunny on FXX

It's Always Sunny in Philadelphia

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Kaitlin Olson

Sweet Dee

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

Career Highlights

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.

David Hornsby headshot wearing a red flannel shirt and a lollipop stick hanging out of his mouth.

David Hornsby

as Rickety Cricket

David Hornsby stars as "Rickety Cricket" in the critically-acclaimed FXX original series It’s Always Sunny in Philadelphia.