A theory of why “It’s Always Sunny in Philadelphia,” an excellent show about terrible people, has stayed successful throughout 20 years of changing cultural appetites.

Mac and Olson (Dee), as well as costars Glenn Howerton (Dennis) and Danny DeVito (Frank), attended Mac’s opening party. It’s Always Sunny launches its 17th season on July 9.

It's Always Sunny in Philadelphia is a sitcom and black comedy created by Rob McElhenney. It stars Rob McElhenney, Charlie Day, Kaitlin Olson, Glenn Howerton, and Danny DeVito. The series follows ...

Wild card! Creator and star of “It’s Always Sunny in Philadelphia” Rob McElhenney has filed to change his legal name, according to reports. The showrunning Philly favorite will now be going ...

The It’s Always Sunny in Philadelphia and Welcome to Wrexham star is officially changing his name to “Rob Mac.” He legally filed in Los Angeles to change his name, confirming the news to ...

As “It’s Always Sunny in Philadelphia” enters its 17th season after nearly two decades, its team of writers/stars (Charlie Day, Glenn Howerton and Rob Mac) has become a well-oiled machine.

Let’s face it — you’ve probably been calling him “Mac” this whole time anyway. Rob McElhenney, the longtime star of It’s Always Sunny in Philadelphia, is making it official.

Mac's Tavern in Old City is closing after a 15-year run on Market Street. The bar is best-known for its ties to 'It's Always Sunny in Philadelphia,' whose husband-and-wife stars Rob McElhenney and ...

Actor Rob McElhenney, the creator of 'It's Always Sunny in Philadelphia,' is changing his legal name to Rob Mac. He said his name is frequently mispronounced and that simplifying it will aid his ...

10 Episodes of It’s Always Sunny in Philadelphia The Prove Mac Is the Best If any member of the Always Sunny gang has actually experienced some sort of arc, it’s Mac.

"Always Sunny," which premiered way back in 2005, was created by Rob McElhenney, who goes by Rob Mac, and Glenn Howerton. They co-star in their comedy as, respectively, Mac and Dennis.

Rob Mac (center left) with the core cast of “It’s Always Sunny in Philadelphia” including wife Kaitlin Olson (far right). To drive home the “silly” preoccupation with his name change ...