Peter Clemenza

Peter Clemenzais a fictional character who first appeared inMario Puzo's 1969 novelThe Godfather. He is played byAcademy Award-nomineeRichard CastellanoinFrancis Ford Coppola's 1972film adaptation of the novel, and byBruno Kirby(as a young man) inThe Godfather Part II(1974).
Born nearTrapani,Sicily, Peter Clemenza is one of DonVito Corleone'scaporegimesand oldest friends, as well as the godfather of his eldest son,Sonny. He has a reputation as a superb judge of talent; his regime produced five futurecapos—Sonny,Frank Pentangeli, Rocco Lampone,Al Neri, andJoey Zasa. The novel also establishes that when Sonny asks his father to join the "family business", Vito entrusts Clemenza, already a seasoned criminal, with the responsibility of mentoring Sonny.
Clemenza is a supporting character in the main story, but several of his actions are key to the plot. For example, he is ordered by Don Corleone, viaconsigliereTom Hagen, to oversee the punishment of two teenage boys who received suspended sentences for beating and attempting tosexually assaultthe daughter of undertakerAmerigo Bonasera. Vito's wife,Carmela, is the girl's godmother and Vito extracts a favor from Bonasera in return for dealing with the boys. Clemenza assigns the job to his best soldier, Paulie Gatto; Gatto enlists two former boxers who work as enforcers for the family to help him give the boys a severe beating.
When Gatto is implicated in drug kingpin Virgil "The Turk" Sollozzo's assassination attempt on Don Corleone, Sonny – now Vito's heir apparent – orders Clemenza to execute him. Clemenza considers Gatto's actions a personal insult, as Gatto had been his protégé. Clemenza recruits Rocco Lampone, a Corleone associate, to kill Gatto so Lampone can "make his bones". Clemenza has Gatto drive him and Lampone around for several hours on the pretext of locating housing ("mattresses") for Corleone soldiers in the event war breaks out with the other Mafia families. After Lampone shoots Gatto in the back of the head, Clemenza— upon returning to the car after relieving himself— utters (to Lampone) his most famous line in the film: "Leave the gun. Take thecannoli."
When it is decided that Vito's youngest son,Michael, will murder Sollozzo and CaptainMark McCluskey, a corrupt NYPD captain on Sollozzo's payroll, Clemenza is assigned to prepare a gun for Michael to use, instruct him how and when to use it, and what to do after the shooting. Michael retrieves the gun, which Clemenza had planted in the bathroom of a restaurant, and kills Sollozzo and McCluskey. While Michael hides inSicily, Clemenza and the other capos prepare for an all-out war against the other four families. The war ultimately claims Sonny's life. Upon returning to New York, Vito dies a natural death, and Michael succeeds his father as Don.
Clemenza, on Michael's orders, later takes part in the infamous "baptism killings" by assassinating Don Victor Stracci with a shotgun while the Don and his bodyguards were coming down on an elevator. He also garrotesCarlo Rizzi, Michael's brother-in-law, who conspired with Don Emilio Barzini to murder Sonny. Clemenza is last seen greeting Michael as "Don Corleone" andkissing Michael's handas a sign of respect.
Clemenza does not appear in the present timeline of the film due to a disagreement between Castellano andParamount Picturesover the character's dialogue and the amount of weight Castellano was expected to gain for the part.After Castellano bowed out of the film, Clemenza was written out of the script and replaced byFrank Pentangeli.  It is explained that, by the time of the film, Clemenza has died under suspicious circumstances; whenFredomentions that Clemenza died of a heart attack, Corleone hitman Willi Cicci scoffs, "That was no heart attack," implying that Clemenza may have been murdered.
Clemenza, however, appears in several flashbacks to Vito Corleone's early days, played by Bruno Kirby. He first meets Vito when asking his neighbor to hide some guns so the police won't find them. Vito does so, and Clemenza repays the favor by stealing an expensive carpet (assisted by a surprised Vito) and giving it to the Corleones for their apartment. Around the same time, Vito and Clemenza befriend a young Salvatore Tessio, who joins their gang. One of their lines of business is selling stolen dresses door-to-door; a deleted scene depicts Clemenza charming his way into the apartment of a young housewife and emerging a little later, having presumably had sex with her.
Later on, the trio's partnership is discovered by the local blackhander, Don Fanucci, who attempts toextortthem. Clemenza initially suggests that they pay Fanucci to avoid any problems with him, but Vito talks him and Tessio into letting him "persuade" Fanucci to accept less money. Shortly thereafter, Vito kills Fanucci and takes over the neighborhood, marking the beginning of the Corleone crime family. Clemenza is last seen at Vito's side as they open Genco Pura Olive Oil, the front for their criminal empire.
Clemenza appears briefly in Puzo's secondGodfatherinstallment,The Sicilian(1984). He meets with Michael during his exile in Sicily at his brother Domenico's home inTrapani. They discuss what the fate ofTuri Giulianois to be, following the orders of a recovering Vito Corleone. Clemenza tells Michael that he should report to him after a week, with or without Giuliano, and that Michael might soon be able to return to America afterward. Clemenza then leaves on a boat toTunis, telling Michael that he would be back the following day with new orders from the Don.
Clemenza's gradual takeover of the Corleone empire (with Vito and the other capos dead, he assumes a more prominent leadership role) in New York is briefly covered inThe Godfather Returns,Mark Winegardner's 2004 sequel to Puzo's original novel. It also tells of Clemenza's involvement during Michael's return from exile and official initiation into the Corleone crime family. Most noteworthy, the novel depicts Clemenza's fatal heart attack (mentioned inThe Godfather Part II), and the manyconspiracy theoriesthat he had actually been murdered by the Rosato Brothers, former Corleone soldiers who had formed their own gang after a dispute over the future of the family.
The Godfather: The Gamedepicts Clemenza in a similar manner to his movie counterpart; Castellano's estate gave permission for his likeness to be used in the game. However, due to Castellano's death in 1988, all of Clemenza's dialogue had to be recorded by actor Jason Schombing. 
In the game, Clemenza, as a senior Corleone capo, becomes partners and good friends with the protagonist,Aldo Trapani. He gives him several missions, most of which are focused on weakening the power of other Mafia families, particularly the Cuneo family.