Glenn Franklin Howerton III is an American actor, writer, and producer. He is best known for playing Dennis…
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Glenn Franklin Howerton III is an American actor, writer, and producer. He is best known for playing Dennis Reynolds on the FX/FXX sitcom It's Always Sunny in Philadelphia (2005–present), which he co-developed and on which he serves as an executive… Glenn Franklin Howerton III is an American actor, writer, and producer. He is best known for playing Dennis Reynolds on the FX/FXX sitcom It's Always Sunny in Philadelphia (2005–present), which he co-developed and on which he serves as an executive producer and writer alongside the other main cast members.
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