Known as one of the Rosato brothers, along with his brother Carmine Rosato, Tony worked in Peter Clemenza's organisation after Michael Corleone moved to Nevada, but was known to have ties with Hyman Roth in Miami. He was portrayed by Danny Aiello.
Tony and his brother began to stir up trouble in the neighbourhood of Frank Pentangeli, Clemenza's successor, after he refused them territories which-they claimed- were owed to them by Clemenza. Pentangeli refused, believing that they were run the territories like a disgrace, and also that the brothers were in fact responsible for Clemenza's heart attack. As Michael was in negotiations with Roth, he refused to allow Pentangeli to act, instead he ordered him to sue for peace and hand over the terroritories, at least for the time being. Pentangeli reluctantly agreed, but was garroted by Tony in a botched assasination. It later transpired that the attempt was intended to fail, it was set up to seem as if Michael had ordered the hit, giving Pentangeli the incentive to testify against his former Godfather and thus remove him as a threat to Roth. It is unknown what became of the Rosato brothers after Hyman Roth's death, although it is possible that they were also wiped out.