Five friends with big egos and small brains run a failing Irish pub in South Philadelphia and make every situation worse.
The pilot episode (The Gang Gets Racist) aired on 2005-08-04. Ages are calculated at the approximate filming date of 2005.
| Actor | Character | Age at Filming | Birthplace | Also Known For |
|---|---|---|---|---|
| Charlie Day | Charlie Kelly | 29.3 years | New York, NY | Horrible Bosses, Pacific Rim |
| Glenn Howerton | Dennis Reynolds | 29.1 years | Tokyo, Japan | A.P. Bio, BlackBerry |
| Rob McElhenney | Ronald "Mac" McDonald | 28.1 years | Philadelphia, PA | Mythic Quest, Welcome to Wrexham |
| Kaitlin Olson | Deandra "Dee" Reynolds | 29.8 years | Portland, OR | Hacks, The Mick |
| Mary Elizabeth Ellis | The Waitress | 26.1 years | Laurel, MS | Santa Clarita Diet, Licorice Pizza |
Charlie Day was approximately 29.3 years old when It's Always Sunny in Philadelphia was filmed around 2005.
Glenn Howerton was approximately 29.1 years old when It's Always Sunny in Philadelphia was filmed around 2005.
Rob McElhenney was approximately 28.1 years old when It's Always Sunny in Philadelphia was filmed around 2005.
Kaitlin Olson was approximately 29.8 years old when It's Always Sunny in Philadelphia was filmed around 2005.
Mary Elizabeth Ellis was approximately 26.1 years old when It's Always Sunny in Philadelphia was filmed around 2005.
Patton Oswalt, Bruce Vilanch, Jim Jefferies, Seann William Scott, Richard Riehle, Craig Robinson all made guest appearances in It's Always Sunny in Philadelphia.
| Celebrity | Appeared As | Episode | Age at Filming | Known For |
|---|---|---|---|---|
| Patton Oswalt | Audience Member | The Nightman Cometh (S04) | 39.6 years | Ratatouille, King of Queens |
| Bruce Vilanch | Himself | The Gang Gets Stranded in the Woods (S06) | 62.0 years | Hollywood Squares, Oscar writer |
| Jim Jefferies | Himself | Thunder Gun Express (S07) | 34.6 years | Legit, Naked and Afraid |
| Seann William Scott | Country Mac | The Gang Broke Dee (S09) | 36.8 years | American Pie, Road Trip |
| Richard Riehle | Health Inspector | Charlie Work (S10) | 66.6 years | Office Space, Public Enemies |
| Craig Robinson | Mediator | Hero or Hate Crime? (S12) | 45.1 years | The Office, Hot Tub Time Machine |
Yes — Patton Oswalt appeared in It's Always Sunny in Philadelphia in the episode "The Nightman Cometh" (Season 4), playing Audience Member.
Patton Oswalt was approximately 39.6 years old (39) when their scene in "The Nightman Cometh" was filmed around 2008.
Yes — Bruce Vilanch appeared in It's Always Sunny in Philadelphia in the episode "The Gang Gets Stranded in the Woods" (Season 6), playing Himself.
Bruce Vilanch was approximately 62.0 years old (62) when their scene in "The Gang Gets Stranded in the Woods" was filmed around 2010.
Yes — Jim Jefferies appeared in It's Always Sunny in Philadelphia in the episode "Thunder Gun Express" (Season 7), playing Himself.
Jim Jefferies was approximately 34.6 years old (34) when their scene in "Thunder Gun Express" was filmed around 2011.
Yes — Seann William Scott appeared in It's Always Sunny in Philadelphia in the episode "The Gang Broke Dee" (Season 9), playing Country Mac.
Seann William Scott was approximately 36.8 years old (36) when their scene in "The Gang Broke Dee" was filmed around 2013.
Yes — Richard Riehle appeared in It's Always Sunny in Philadelphia in the episode "Charlie Work" (Season 10), playing Health Inspector.
Richard Riehle was approximately 66.6 years old (66) when their scene in "Charlie Work" was filmed around 2014.
Yes — Craig Robinson appeared in It's Always Sunny in Philadelphia in the episode "Hero or Hate Crime?" (Season 12), playing Mediator.
Craig Robinson was approximately 45.1 years old (45) when their scene in "Hero or Hate Crime?" was filmed around 2016.