What is the name of Ron Swanson's alter ego in "Parks and Recreation"?

Ron Swanson’s alter ego in “Parks and Recreation” is Duke Silver. Under that name, Ron secretly performs as a smooth jazz saxophonist at a club in Eagleton.

The identity is revealed in the season 2 episode “Practice Date,” when Tom Haverford discovers that the elegant musician Duke Silver is actually the intensely private Pawnee government director. Ron’s hidden musical life is one of the show’s central jokes: his rugged, libertarian, anti-government persona contrasts sharply with Duke’s romantic stage presence and devoted female fan base.

Duke Silver is not a separate character played by another actor; he is Ron’s carefully protected performance persona, portrayed by Nick Offerman. The character’s saxophone skills also had an amusing real-world connection, since Offerman played saxophone himself. The show later revisits the secret in episodes including “Galentine’s Day” and “New Slogan.”

A common mix-up is confusing Duke Silver with Ron’s other aliases or nicknames, such as “The Steak Man.” Those names refer to different jokes, while Duke Silver specifically identifies Ron’s secret jazz career. Ron eventually performs publicly as Duke at Pawnee’s Unity Concert, making the alter ego known to the people around him.