Rob McElhenney, soon to be known as Rob Mac, is defending the decision to change his last name. In a recent post on X, McElhenney shared a brief video explaining why he abridged his last name for those still scratching their heads over the news.

Call him an actor, writer, producer, director, Welsh soccer-team owner and creator of "It's Always Sunny in Philadelphia" - just don't call him Rob McElhenney. It's Rob Mac now. Legally - and for good reason,

Rob McElhenney has officially shortened his name, despite mixed reactions from fans. The actor and comedian recently announced that he would now be known professionally as Rob Mac, citing years of people mispronouncing his surname. In a video posted to X, the It’s Always Sunny in Philadelphia creator addressed the shift.