‘Its Always Sunny in Philadelphia’ star Rob McElhenney files to legally change his name

Wild card!

Creator and star of “It’s Always Sunny in Philadelphia” Rob McElhenney has filed to change his legal name, according to reports.

The showrunning Philly favorite will now be going by the name “Rob Mac,” according to documents filed in Los Angeles, TMZ reported.

The shortened first and last name brings him much closer to his aggressively dopey beer-slinging character in “Always Sunny” — whose name is “Mac” — and is a far cry from the formality of his former government name, “Robert McElhenney III.”

Despite the surprise to fans, Mac mentioned the intention to swap some syllables back in a May interview with Variety.

“As our business and our storytelling is expanding into other regions of the world and other languages in which my name is even harder to pronounce, I’m just going by Rob Mac,” the former real-life bartender told the outlet.

However, his wife and “Sunny” co-star Kaitlin Olson said the couple’s kids were not in favor of the change and she also expressed some trepidation at the prospect.

“The kids are really not happy about it, because they have that last name. And so do I, legally!” she told Variety.

Mac is a part-owner, along with Ryan Reynolds, of Welsh soccer club Wrexham FC.

He launched private company “More Better Industries” in 2024, and was part owner of Philadelphia bar “Mac’s Tavern,” which announced Monday it was closing after 15 years in business.

The 17th season of “It’s Always Sunny in Philadelphia” premieres on July 9.