((Carlo Rizzi is a fictional character!!!)) in Mario Puzo's novel The Godfather. In the 1972 film adaptation, he was portrayed by Gianni Russo.
A native of Nevada, Rizzi migrates to New York City following trouble with the law and befriends Sonny Corleone, through whom he met Sonny's sister Connie in 1941 at a surprise birthday party for Sonny's father Vito (depicted in a flashback in The Godfather Part II). They get married in 1945. Vito doesn't like the idea of Connie marrying a small-time criminal. He is also displeased by the fact that Rizzi isn't a full-blooded Sicilian; his mother was from northern Italy. He only grants Connie's hand in marriage on condition that they hold an old-style Sicilian wedding. Rizzi is thrilled at the prestige of being a member of the Corleone crime family, but Vito instructs consigliere Tom Hagen not to allow Rizzi significant knowledge of the Family's workings, but to "give him a living". Described in the novel as "a punk sore at the world", he regularly beats up and cheats on Connie as a means of exerting his own power over the mighty Corleones. When Connie complains to her parents, Vito coldly refuses to help, presumably to punish her for making such a poor choice. In truth, Vito is angered at how Rizzi treats his daughter, but he feels that he can't do anything because Italian tradition forbids a father from interfering with a daughter's marriage. However, Sonny eventually grows to despise Rizzi for the way he treats his sister, and has to be forcibly prevented from beating him up. Sonny visits Connie one day, and discovers his sister covered in bruises after a particularly bad beating. She begs him not to do anything about it, and he gives her his word. However, without the Don's calming influence, he loses his temper and beats Rizzi mercilessly in the street and threatens to kill him if he ever hits Connie again. Afterward, Rizzi seeks revenge by making a deal with the Corleones' chief rival, Emilio Barzini, to kill Sonny. Rizzi sets the plan in motion by setting up a call from one of his girlfriends, provoking a pregnant Connie into an argument in which he beats her senseless. Connie calls Sonny, who flies into a rage and sets out to confront Rizzi. En route, Sonny is killed by Barzini's men in a hail of gunfire on the causeway. Vito forbids any investigations into his son's death, and concludes on his own that the Barzini family is responsible. After his retirement, his youngest son Michael takes over the family and brings Rizzi in as his "right-hand man" for the planned family move to Nevada, treating him as a lieutenant for several years. In truth, however, Michael had learned sometime earlier that Rizzi had plotted with Barzini to have Sonny killed. While Rizzi thinks that he is ascending to the top of the family, it is merely a ploy to make him vulnerable. Michael even stands as godfather to Rizzi and Connie's second child, at the same time as his massacre of the heads of the Five Families. After the baptism of Rizzi's second child, Michael confronts Rizzi and tells him that he knows about his role in Sonny's death. However, he assures Rizzi that, while he would be exiled from the family, his life would be spared, which satisfies Rizzi enough to confess his involvement with Barzini. When Rizzi gets into his car to leave, however, he is violently garroted by Peter Clemenza. Connie is enraged at what Michael has done, despite how badly Rizzi had treated her, and resents him for many years afterward. In Puzo's original novel, Connie initially berates Michael for arranging the murder of her husband, but a week later apologizes for her outburst and assures Michael's wife, Kay, that Michael had nothing to do with Carlo's death. Connie marries again less than a year later.