High Quality Content by WIKIPEDIA articles! Leonard "Lenny" DiMaria (born 1941), also known as "Fatso" and "the Conductor", is a New York mobster and Caporegime in the Gambino crime family. He is considered by law enforcement to be a close associate of alleged Gambino Boss Nicholas "Little Nick" Corozzo and has served as his right-hand-man for over 30 years.