Rob McElhenney has chosen to go by Rob Mac publicly, and Kaitlin Olson reveals how she feels about this change.

Rob McElhenney has legally filed to change his name to "Rob Mac"—a name fans and friends have already been calling him for ...

It's Always Sunny in Philadelphia has some absurd stunts by one of the characters, Frank Reynolds, played by Danny DeVito.

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 ...

They might have crossed every moral and political boundary imaginable, yet the audience can never get enough of The Gang and ...