Sardonic boss on "Parks and Recreation"

RON

This mustachioed libertarian famously hates government despite running a Pawnee department and once hosted a breakfast food-themed party.

This clue points to Ron Swanson, the deadpan, libertarian boss from the TV show Parks and Recreation. "Sardonic" describes his dry, no-nonsense humor, and "boss" refers to his role as director of the Pawnee Parks Department. The answer is shortened to "RON," his first name, which fits the crossword’s brevity. Fans of the show would instantly recognize him as the mustachioed, meat-loving character.