He was apparently most famous for “Police Academy 2” and “Police Academy 3”, but he had a pretty lengthy career before those. He was prolific on TV, appearing on “Movin’ On” and a lot of ’70s cop shows…
…including “Mannix”. (“Deathrun”, season 2, episode 13. This is one of the ones with an old Army buddy of Mannix: however, Mr. Metrano was not the Army buddy.)
From the IMDb info: Birth name was Harpo Mesistrano.
Harpo!