In the middle of Season 12, Mac (played by Rob McElhenney) finally came out as gay. Though he briefly came out in Season 11, only to immediately renege, this time Mac stayed out. And in “Mac Finds His Pride,” the first episode of Season 13, Mac comes out to his ex-con father Luther (played by Gregory Scott Cummins). And it wouldn’t be an episode of It’s Always Sunny in Philadelphia if.