Rob McElhenney has had much success in TV under that name. McElhenney, co-creator of the long-running comedy series “ It’s Always Sunny in Philadelphia ,” has filed for a legal name change. McElhenney is known to fans of the FXX show as Mac (a character born Ronald McDonald ), so it’s not a long ways off from that.

The “ It’s Always Sunny in Philadelphia ” creator and star has filed papers in Los Angeles to legally change his name to Rob Mac, People has confirmed. Mac is the name of McElhenney’s character in his beloved FX comedy and is the first syllable in his family’s surname.