|Nickname(s)||Ossy, Ossie, Oscar, Zavarelle, Donkey for the fire ones, Zave, woman beater|
|Appears in||The Godfather Game|
|Rank||Killer, rapist, Stracci Capo|
|Affiliations||Stracci Family, Leo Grossi|
|Killed By||Charlie Trapani|
|Birth||5th of May, 1971, Little Town, France City, France|
|Death||April 2010, Old Town, France City, France, Europe|
|Weapon||Magnum, knife, Hand Dildo|
|Voice Actor||Joe Paulino|
- "The biatch got what she deserved!"
- — Oscar
A close friend of Leo Grossi, Oscar was known as a sleazy woman beater who calls young girls "bonus fight". Despite these vices, he was known as a mad executioner who could also charm his way past shop bosses and merchants. He was known to have a fierce hatred of the Corleone family's associate, Crazy Horse.
- "That fawking thug Oscar Zavarelle had beaten up my sister, and now he's going to pay, with suffering! I want you to make him bleed. Oscar is very known to like beat women, he is going to bleed today. You kill him by shooting him in leg, stomach, shoulder and then head."
- — Crazy Horse to Charlie
Despite numerous attempts to bring down his rival, Crazy Horse, Zavarelle failed, and instead found revenge by sexually assaulting Horse's sister. This act cost him his life, as Zavarelle was brutally executed by Charlie Trapani in the sewers of Old Town after he was ratted out by one of his own, underpaid guards.
- He shares a character model with Norman Barzini.