A relative of Genco Abbandando, the Corleone family's original consigliere, Dominic became Michael's press secretary when the Corleone family became legitimate. He constantly faced questions from the press about the less legitimate side of the family. He was seen most of the time alongside legal advisor B.J. Harrison.
He went with Michael to Rome in order to secure the Immobiliare deal, and reported the grave condition of the Pope. As Vincent Mancini, Michael's successor kept the Corleone's business criminal, it is possible that Abbandando was moved to a different position in the business.