The Gang returns to Paddy's Pub with Mac (Rob McElhenney), Dennis (Glenn Howerton), Charlie (Charlie Day), Dee (Kaitlin Olson), and Frank (Danny DeVito). It's Always Sunny in Philadelphia was created by McElhenney and is executive produced by McElhenney, Day, Howerton, Michael Rotenberg, Nick Frenkel, Tom Lofaro, Rob Rosell, Scott Marder, and David Hornsby. The show is produced by FX Productions.