With a singularly nebulous background, which, by his account, included stints as a Las Vegas nightclub emcee, radio personality, and jewelry tycoon, and comparatively little acting experience, Gianni Russo won the role of Carlo Rizzi in The Godfather (1972) on the basis of his screen test. Since then, Russo has remained busy as an actor, mostly playing assorted "wiseguys" and Mafia types. He was appeared again with Marlon Brando in a small role in The Freshman (1990) in which Brando parodied his Don Corleone role to good effect. IMDb Mini Biog…