Vince Mugnaio
Vince Mugnaio, Pilate Providence, and Joe "Deadpan" Salem are the three most feared mobster, apart from maybe Jack Lupino, and are Don Punchinello's personal hitmen.
Role
We first hear about them in a letter, Max finds from Punchinello to Lupino threatening to send the Trio over, but Jack isnt intimidated.
They appear in person during Angel of Death, protecting the manor but Max kills them one by one. First Pilate Providence AKA Big Brother, then Joe "Deadpan" Salem and finally Vince Mugnaio.
Pilate Providence
Joe Salem