Who plays "Sweet Dee" Reynolds on the Rob McElhenney created comedy? 
It's Always Sunny in Philadelphia:  It was created by Rob McElhenney, who developed it with Glenn Howerton. It's Always Sunny in Philadelphia:  It is executive produced and primarily written by McElhenney, Howerton, and Charlie Day, all of whom star alongside Kaitlin Olson and Danny DeVito.
i don't know