Gregory Sierra is an American actor known for his roles as Detective Sergeant Chano Amenguale on Barney Miller and as Julio Fuentes, the Puerto Rican neighbor of Fred G. Sanford on Sanford and Son.
He also guest-starred as a Jewish radical in an unusually dramatic episode of All in the Family, working with the Hebrew Defense Association, an organization whose goal it was to stop antisemitism in the neighborhood. In the plot, he volunteers in helping to chase away neo-Nazi thugs presiding in the neighborhood who spray-painted a swastika on the Bunkers' front door. He is later killed by a car bomb planted by the neo-Nazis. The actor later went on to star as Dr. Tony Menzies on the unsuccessful sitcom A.E.S. Hudson Street.
He also guest starred on many television series during his career, including appearances on Mod Squad, Alias Smith and Jones, Mission: Impossible, Hawaii Five-O, Gunsmoke, The Greatest American Hero, Soap, The Fresh Prince of Bel-Air, The X-Files, Murder, She Wrote and Hill Street Blues.