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.

Rob McElhenney has legally filed to change his name to Rob Mac, after previously sharing that people would often mispronounce his surname. The 'It’s Always Sunny in Philadelphia' star and creator has already been credited under his new name in FX's official materials for the long-running sitcom.