Experienced detective who is often underestimated by other NYPD members due to the troubled history of the Bronx SVU. Before becoming a cop, he had gone to trade school, also took the firefighter exam and the police exam at around the same time. The police had called him back first so he decided to be a cop. One side of his family is Irish, the other Italian. He was a major whistleblower against dirty cops, which cost the city millions to rectify and made him wealthy with a cash settlement.