The “ It’s Always Sunny in Philadelphia ” creator and star has filed papers in Los Angeles to legally change his name to Rob Mac, People has confirmed. Mac is the name of McElhenney’s character in his beloved FX comedy and is the first syllable in his family’s surname.

Rob McElhenney of "It's Always Sunny in Philadelphia" filed for a legal name change after long hesitating to change his last name.

Rob Thomas, Sinbad, Wade Boggs, Jason Kelce, Bryan Cranston, Aaron Paul, Richard Grieco, and Scott Bakula. These are all people who played themselves on It’s Always Sunny in Philadelphia, and almost never in a straightforward way.