okay, i'll try something of my own... i've been a little hesitant because i'm not too creative and i'm not an expert on the mob, but here goes:

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After the assassination of Don Cuneo in 1955, the underboss of the family, Joseph Attene, took over as head of the family, supported by Don Corleone of the Corleone family. Joe Attene was a small, portly man, but with a face that commanded attention and the notorious mole on his chin; his nickname came to be, especially amongst his detractors and enemies, "The Mole". He was one of the newer Americanized Dons. Attene was born in Chicago in 1911 to Maria and Elmiro Attene, immigrants from Castellamare del Golfo, Sicily. In 1926, the Attene family moved to New York, where Elmiro worked as an officer on the trail of bootleggers.

In June, 1928, Elmiro was killed in a firefight with an Irish gang. The 17 year old Joe, small and rather shy, was nevertheless determined to take his revenge on his father's killers. He had heard of a man in his neighborhood, a rising mob figure by the name of Cuneo, and requested his help in fulfilling his vendetta. Attene wanted to do the deed personally, though, and with Cuneo's connections and help he tracked down the killers to a warehouse in Queen's. Attene drew a Tommy gun and took out six of the members of the gang and wounded ten more; he himself was wounded in numerous places. He got out alive, though, and thus began his descent into crime.

Joe Attene, working under Cuneo, who was a capo in the Brentano family, worked diligently in labor racketeering, becoming a presence on the Brooklyn waterfront. Attene, with Cuneo, soon established their piece of territory in the Bronx, and Joe was Cuneo's right-hand man, though he was still young. In the five families war of 1933, the head of the family, Gaspar Brentano, was killed. Cuneo and another capo, Ettore DeMatteo, engaged in a power struggle for control of the family. DeMatteo initially won and was for a time the boss. In 1939, though, Attene, at his own initiative, hit DeMatteo, who was browsing in a Little Italy bookstore; he was riddled with bullets from Attene and four other men. Carmine Cuneo became the boss of the family, and installed Attene as his underboss.

Following the shooting of Don Vito Corleone, and the subsequent killing of Sollozzo and a Police Chief by his son, a gang war ensued between the families of New York. Cuneo lined up behind the Barzini family; this led to some friction between Cuneo and Attene, who preferred to stick to business interests. Also, Joe Attene craved more power for himself, and began plotting secretly to undermine and remove his boss.

So, when Michael Corleone, in 1955, approached him with his plan to kill the heads of the families, Attene went along, and had a part in setting up Cuneo, who was shot exiting a downtown hotel. Joe Attene then became the boss of the former Cuneo family. As boss, Attene grew the family, getting into drugs, and branching to various places; he established successful operations in Montreal, for one. He owed his position in part to the Corleone family, though, and through the 60's he became more belligerent and aggressive in trying to escape the shadow of the Corleones. In 1964, Attene made an unsuccessful move on a Corleone-owned casino and hotel in Las Vegas. Following the attempt, Attene became more and more withdrawn and paranoid, thinking Michael Corleone would have his revenge. His worst fears came true, as, on July 4, 1965, Attene was shot with a single bullet to his head coming out of his favourite delicatessen, in front of his eight year old boy, Mario. The killer was never captured or known, but it is widely suspected that Al Neri, a Corleone family enforcer, did the deed. Joseph (the Mole) Attene was dead.

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i don't know how realistic that is, i tried my best. is it only me that finds this kind of thing fun?