Rob McElhenney, Glenn Howerton, Kaitlin Olson, Danny DeVito and Charlie Day act during a dance scene on the set of “It’s Always Sunny In Philadelphia” on May 23, 2007.

As Season 17 of It’s Always Sunny rolled out its first two episodes on FX and Hulu on July 9, DECIDER sat down with DeVito, who opted to candidly speak about his wild and unruly character, who ...

Danny DeVito, left, and Charlie Day, photographed at Fox Studios in Los Angeles this month, are back for Season 17 of "It's Always Sunny in Philadelphia," which turns 20 this year.

Danny DeVito, left, and Charlie Day, photographed at Fox Studios in Los Angeles this month, are back for Season 17 of “It’s Always Sunny in Philadelphia,” which turns 20 this year.