The actor formally known as Rob McElhenney made headlines a little less than a year ago when he revealed he was changing his name. While some initially thought he was joking, the multihyphenate confirmed he was changing his name to Rob Mac for professional purposes. Mac’s move led to a myriad of responses from fans as well as some entertainment industry pundits at the time. Now, Mac’s longtime It’s Always Sunny in Philadelphia castmate, Charlie Day, is weighing in on his name change in a hilariously honest way.
