Tony is a member of the mafia.
Throughout the Series[]
In the Season Two episode, Undercover, Jake Peralta is going through a receiving line at the wedding of Angie and Marco as an undercover member of the mafia family. When he goes to give Tony a traditional hand shake Tony pushes his hand away and insists on a kiss instead. He then declares Jake as one of them, telling the other 3 older gentlemen in the receiving line that Jake's a good kid.