Nicky tried to forget about the fact that the Little League was run by a cop, and was even friendly to him. His son's presentations at school, as well as get him into a Little League baseball game. Despite his life of crime, Nicky was also a devoted husband and father. Nicky also intimidated the bookmakers in Las Vegas. The man most likely died as a result of this.

A prime example was when Nicky repeatedly stabbed a man in the neck with a pen after he had insulted Ace, later beating him and stabbing him some more, making fun of him for crying. Nicky was a psychopath, who would kill anyone he saw as a threat. Nicky had his right-hand man Frankie Marino to help him with his criminal activities. When the Mafia decided to move into Las Vegas to skim the profits of the Tangiers Casino, they chose Ace to run the casino, while Nicky was assigned to protect him. Nicky worked for the Mafia boss Remo Gaggi, whom made Santoro.

Nicky Santoro was a childhood friend of Jewish handicapper Sam 'Ace' Rothstein. He is portrayed by Joe Pesci who also played Tommy DeVito and Harry Lime. He's based off real life Chicago Outfit enforcer Anthony John 'The Ant' Spilotro. Nicky Santoro is the main antagonist of Casino.

The casino nickey quotes