Specifically, that It’s Always Sunny In Philadelphia and Mythic Quest co-creator Rob McElhenney had filed paperwork to legally change his name to “Rob Mac,” acting on a re-branding he’d floated a few weeks earlier in a Variety profile of himself and wife Kaitlin Olson.

In a one-minute video he posted earlier in the week, he announced he's changing his name to ... Rob Mac. It'll be "mostly" a stage name, and, er, Mac explained that lots of people have had trouble pronouncing it or spelling it over the years.

Kaitlin Olson says her kids are "really not happy" about their dad Rob McElhenney changing his name. The 'It's Always Sunny in Philadelphia' actor filed to legally change his name on June 26.